Showing posts with label transposition. Show all posts
Showing posts with label transposition. Show all posts

Tuesday, April 19, 2016

Manitoba election prediction: PC landslide

Seat prediction map
Manitobans are heading to the polls today in what will be an historic provincial election. If all the polls are correct, then voters are set to elect a Progressive Conservative government in a landslide election, kicking out the governing NDP, which has run the province since 1999, winning four straight majority governments in the process.

Polls are suggesting the PCs are hovering around 50% in the popular vote, which would be their highest vote share since 1910. If they get a few points higher than that, it would be their highest vote share in the province's history. This means that the Tories will be winning seats they have never won before, some of them quite easily, like Brandon East, Interlake and Selkirk. The NDP meanwhile is polling in the mid-20s, which would be their worst result since 1988. The Liberals on the other hand are just looking to gain back relevancy. After winning just one seat and 8% of the vote in 2011, they are now polling in the mid-teens, and could see their best result since 1995. The Greens are also polling well, averaging at 8%, which would be their best result ever.

This has been an election of awful leaders. NDP Premier Greg Selinger is coming off of last year's controversial leadership election, which followed a caucus revolt. Selinger won the election by a narrow result, thanks in part to the backing of major unions in the province. Not only that, Selinger is carrying 17 years of governing baggage behind him. The man who will become Premier, PC leader Brian Pallister is carrying baggage of his own. Many see him as being too right wing for the province, and is currently embroiled in a scandal in where it was discovered he had been to Costa Rica 15 times since 2012, and had lied about his travels. As for Liberal leader Rana Bokhari, she has run a lacklustre campaign which included an awful debate performance. At the beginning of the campaign, the Liberals had been polling ahead of the NDP for second place, but have now fallen considerably behind. The only leader that seems to be popular is Green Party head, James Beddome, who will definitely benefit from a high protest vote this election.


 


Predictions

For my riding predictions, I have come up with a “rating” for each riding (safe, likely, lean or toss up), which rates how comfortable I am in my predictions for each seat. I've made these ratings by using recent regional poll numbers and comparing them to the last provincial election as well as an average result of the last provincial and federal elections (see maps below). In taking a look at both elections, I feel I have a way to identify any abnormal riding results, and account for this in my predictions. Where my numbers contradict each other in a riding, or where they show a close race, I've declared the seat a “toss up” and offered my gut prediction in that riding, based on its history and its candidates. I've also taken into consideration a couple of riding polls that have come out over the course of the campaign.



Overall, I am predicting a landslide Progressive Conservative victory, with the Tories winning 43 of the 57 seats in the legislature. This would be their biggest electoral win in the province's history. I am predicting that the governing NDP will be reduced to just 11 seats, which would be their worst election since 1966. And ss for the Liberals, I am predicting they will win three seats, their best total since 1995.

Polls are suggesting the Tories are winning about two-thirds of the vote in rural Manitoba, which means they will likely sweep all of rural southern Manitoba (including Brandon), leaving the NDP to their northern stronghold (though they could close Flin Flon to the Liberals). In Winnipeg, polls indicate that the Tories have at least a 15 point lead over the NDP, which will see the PCs win back their former suburban strongholds in the south and west ends, and eat into traditional NDP territory in the north and east of the city. This will reduce the NDP to their stronghold in the central and north central parts of the city. Meanwhile the Liberals should hold on to their lone seat of River Heights, and maybe pick up one or two more seats thanks to vote splits. The Greens may also win a seat or two. 

Here are my seat by seat ratings. Ridings are coloured in by how they voted in 2011. 

Seat by seat rating.

Ridings to watch


I've identified ten ridings as “toss ups” - ridings where my numbers have shown a close race. For each of these ridings I went with my gut (with detailed reasoning) as to how I believe they will go:

Concordia: This north Winnipeg riding is being defended by incumbent NDP MLA Matt Wiebe, who has represented the seat since 2009, when he took over the riding from its predecessor, former Premier Gary Doer. The seat has voted NDP in every election since it was created in 1981. Wiebe won the seat in 2011 by 35 points, and it is one of only five provincial ridings to go NDP in the last federal election. On paper it is a safe NDP seat, but with the amount of swing the polls are predicting, this riding could be in play. I'm still predicting the NDP to hold on though.

Elmwood: Right next door to Concordia is Elmwood, which is being defended by long-time NDP MLA Jim Maloway, who has held this seat from 1986 to 2008 and since 2011. This riding has also voted NDP (and its predecessor, the CCF) in every election since it was created in 1958. The result in the last election in this seat was relatively close though, with Maloway defeating his Tory opponent by 21 points. One glimmer of hope for the NDP is that they did win the transposed federal result here. However, my numbers show the PCs winning this seat in a close result, which is why I am predicting they will win it.

Flin Flon: This riding, located in northwestern Manitoba will see an interesting race, as its defending MLA Clarence Pettersen is running as an independent, after he lost the NDP nomination. Flin Flon has been an NDP seat since 1969, but Pettersen's candidacy is expected to split the NDP vote. In the federal election, the NDP won Flin Flon over the Liberals by a slim margin, suggesting the Liberals could be the party that has the best chance at benefiting from the split. The provincial Liberals are also polling better than the NDP in rural Manitoba. This is why I think they will win the seat.

Fort Garry-Riverview: The NDP won this central Winnipeg seat in 2011, but this should be a Green-PC race. Green Party leader James Beddome is running in this riding, and of the four party leaders, he has the highest approval ratings. The Greens are polling quite high in the city (around 10%) which is enough to put this riding in play. Without riding polling, Green Party targets are hard to predict, so it is hard to say whether Beddome will win this seat. I'd prefer to hedge my bets though, and go with the PCs here, who could come up the middle against a divided progressive vote.

Fort Rouge: This central Winnipeg seat is the riding where Liberal leader Rana Bokhari has chosen to run. A riding poll from the beginning of the campaign showed a three-way race with Bokhari ahead of the PC candidate by just two points. At that point in the campaign the Liberals were doing much better in province-wide and city-wide polling, but now they are doing much more poorly. It is entirely possible that this drop in Liberal fortunes has happened in Fort Rouge as well. The NDP is running a star candidate in First Nations musician Wab Kinew, and I predict that this split in the non-PC vote could cause the Tories to come up the middle and win this seat for the first time since 1969.

St. Johns: My numbers suggest a tight NDP win in this north-end riding, but what will make it hard for the New Democrats to keep this seat is the fact that incumbent MLA Gord Mackintosh has decided to retire, making this an open seat. This seat has been won by the NDP, and its predecessor the CCF in every election since it was created in 1958, and Mackintosh won the riding in 2011 by an impressive 44 point margin. Because of these factors, I believe the NDP will manage to hang on to this seat.

The Maples: This ethnically diverse riding in the northwest corner of Winnipeg has had a history of electing Liberals to the provincial government, but none since 1995. A rebound in Liberal fortunes suggests that they will be competitive there, but will it be enough for them to win? The NDP, which holds this riding, is hoping for a split in the anti-NDP vote in order to hold on to the riding. However, I believe the surging Tories will pick this up, thanks to a split in the anti-PC vote, winning this riding for the first time ever.

Thompson: Way up in the north of the province is the riding of Thompson, which has been held by the NDP's Steve Ashton (who had challenged NDP leader Greg Selinger in last year's leadership election, following a caucus revolt) since 1981. The riding has only voted for the Tories once in its existence, in 1977. However, my numbers suggest that this riding may be in play. It is hard to fathom the PCs winning this seat though, considering Ashton won it by 40 points in 2011, and his daughter, Nikki won Thompson in last year's federal election. Because of this, I think the NDP will hold on to the riding.

Tyndall Park: The Liberals came a close second in this northwest Winnipeg seat in the last election, losing to the NDP's Ted Marcelino by a 10 point margin. Because of this, my numbers are suggesting a narrow Liberal win here. Though, with their faltering campaign, it is not a given, and either the NDP or the PCs might be able to win it as a result. Though, I think I will trust my numbers and predict a Liberal win here.

Wolseley: This central Winnipeg seat saw the Green's best result in 2011, when their leader, James Beddome won 20% of the vote, coming in second place. Beddome chose to run in Fort Garry-Riverview though, but the Greens are still running a star candidate in environmentalist David Nickarz in this riding. NDP MLA Rob Altemeyer defeated Beddome by a 40 point margin in 2011, a difference that will be very hard for Nickarz to overcome. It is hard to predict insurgent Green campaigns, and so I will play it safe and predict an NDP hold here.


Outlook


While losing will obviously be bad news for the NDP, it will mean finally getting rid of Selinger, and replacing him with a stronger leader. Also, beating out the Liberals for second place would be a minor victory, as we know from the results of the federal election, Manitobans would be quite willing to vote Liberal with the right leader, and a third place finish for the NDP would be a disaster for them.

As for the Tories, many people are suggesting it could be a “one and done” government for the party, due to weaknesses of Brian Pallister. He is being likened to former PC Premier Stirling Lyon who only lasted one term, before voters ditched his government in 1981. But, we may be getting ahead of ourselves here.

For the Liberals, they would be wise to ditch Bokhari as leader, though she will want to hang on if they make any seat gains. However, she will probably have to keep her seat first!

For those who want to follow the results, the polls close at 8pm Central Time, which is 9pm Eastern.

Wednesday, November 18, 2015

Newfoundland and Labrador's new electoral map

The results of the 2011 election on the new map
Voters in Newfoundland and Labrador will be heading to the polls on November 30th in the province's 19th election held since joining confederation in 1949. This election will be held on a new electoral map, as the size of the House of Assembly (the province's legislature) has been reduced from 48 seats to 40. This will be the first election since 1959 that the province will have this few seats.

Due to these changes, I took the initiative to calculate the results of the last provincial election in 2011 and transpose them on the new boundaries, using the same process I had done for New Brunswick's recent redistribution. Much like New Brunswick, Elections Newfoundland and Labrador did not publicly release their own transposition numbers, unlike Elections Canada and some other provincial elections agencies.

Actual results of the 2011 election

Background

New premier Paul Davis was gung-ho in his plan to reduce the size of the legislature, and was quick to do so after becoming leader. A boundary commission was created, and new boundaries were drawn over the course of the Spring, in order to give the province's election agency enough time to be ready for the November 30 election. What is usually a long and drawn out process that can take a couple of years (as we saw with the last federal redistribution) was done in a few months.

While the reduction of government is consistent with conservative ideology (Davis is a Tory), the move may backfire for his party. Recent polls have shown the Tories could be wiped off the electoral map, a feat that is easier to do with larger, more populated ridings. Smaller ridings are more likely to overlap with pockets of opposition support, and are therefore more likely to elect more opposition members. It is harder for opposition members to get elected (especially in landslide elections) with larger ridings, as areas of traditional opposition support are more likely to be lumped in with non-opposition areas, when the ridings grow in size. 


This redistribution process has already hurt one of those opposition parties, the NDP. The NDP won five seats in the 2011 election, but would have only won three seats on the new map. This is because in two of those ridings, the boundaries were extended to encompass enough non-NDP areas to have swung the seats to other parties. The Liberals were less hurt, as they would have won five seats on the new map, compared to the six seats they actually won in 2011. The Tories saw a bigger numerical drop, winning 32 seats on the new map, down from the 37 they actually won.  Proportionally however, they were not hurt as bad, as the two other parties, and losing five seats is no big deal considering they still would have won a majority government on the new map.

Redistributed results of the 2011 election by riding

Regional analysis

The St. John's area loses one riding, with the resulting domino effect meaning the NDP would only have won three seats in the city on the new map (down from the four they actually won). This loss is due to the riding of St. John's North (renamed to “Mount Scio”) gaining some heavily Tory areas in the Paradise area. The PCs would have won the remaining 10 seats in the region. While the boundary shifts in Mount Scio gave the Tories an extra seat, they would have lost one in the south end of the city, with the merger of St. John's South and Kilbride into the new riding of Waterford Valley. Another big shift in the city was in the east end, where the two ridings of St. John's East and Signal Hill-Quidi Vidi have re-oriented themselves into St. John's East-Quidi Vidi and Virginia Waters-Pleasantville. Both seats went NDP in 2011.

The rest of the Avalon Peninsula also loses one seat. This seat loss is on the west side of Conception Bay, where the riding of Carbonear-Harbour Grace is being split up. The Carbonear half is going to the new riding of Carbonear-Trinity-Bay de Verde (formed from the former riding of Trinity-Bay de Verde), while the Harbour Grace half has joined the new riding of Harbour Grace-Port de Grave (formed from the old riding of Port de Grave). All the ridings in this region voted PC in 2011, meaning a net loss of one seat for the Tories.

Eastern Newfoundland goes from having six seats to just four, following the redistribution. One seat (Burin-Placentia West) was removed from the Burin Peninsula, with a part going to the new riding of Burin-Grand Bank and a part going to the new riding of Placentia West-Bellevue. The other seat loss comes from the Bonavista Bay area, which will see the old ridings of Terra Nova and Trinity North be merged together forming a new Terra Nova riding. This seat loss hurts the Tories the most, as all six ridings voted PC in 2011.

Central Newfoundland also loses two seats. The former riding of “The Isles of Notre Dame” will see the Twillingate area join the new riding of Lewisporte-Twillingate while Fogo Island joins the new riding of Fogo Island-Cape Freels. Meanwhile, the riding of Grand Falls-Windsor-Green Bay South will split up with the Grand Falls-Windsor area of that riding being absorbed by the riding of Grand Falls-Windsor-Buchans while the Green Bay South area will join the new redundantly named riding of Baie Verte-Green Bay. All nine ridings in the region voted PC in 2011, so the seat reduction is a net loss of two ridings for the party.

Western Newfoundland also loses two seats, with the Humber area losing both ridings. The new riding of Humber-Grose Morne was created as a merger of St. Barbe and Humber Valley while Humber East has been fragmented into the new riding of Corner Brook (formed from Humber West), St. George's-Humber (formed from St. George's-Stephenville East) and Humber-Bay of Islands (formed from Bay of Islands) Both the NDP and the Liberals were the losers in this region. The addition of part of Humber East into the new Humber-Bay of Islands would have made that riding go PC in 2011, when its predecessor riding of Bay of Islands went Liberal.  Meanwhile, the northern riding of The Straits-White Bay North, which went NDP in 2011, has been increased in size, taking in a Liberal part of St. Barbe,. This boundary change would have been enough to shift the riding to the Liberals, and to compensate for the merger of the two Liberal ridings of St. Barbe and Humber Valley. While the new map gives would have given the PCs the new Humber-Bay of Islands riding, the abolition of the Humber East riding gives them a net gain of 0 seats in the region.

The redistribution process came with the promise that Labrador would retain its four seats in the House of Assembly. As such, the region saw no boundary changes, despite two of the ridings (Torngat Mountains and Cartwright-L'Anse au Clair) being extremely underpopulated. In 2011, the Liberals won those two seats, while the Tories won the other two (Lake Melville and Labrador West).

Newfoundland and Labrador's new election map (click to enlarge)

Of course, these numbers only show the results of the 2011 election on the new boundaries, an election which saw the Progressive Conservatives win a large majority of seats, and a majority of the popular vote. With the Liberals heading for what may be an historic landslide victory, this map will look very different come November 30.

Note: An earlier version of this blogpost indicated the the riding of Humber-Bay of Islands would have gone Liberal in 2011, however this was based on an error in the data. It has since been corrected.

Tuesday, August 19, 2014

New Brunswick provincial redistribution and transposition


2010 Election results on the new boundaries
Yesterday, New Brunswick Premier David Alward met with the New Brunswick lieutenant-governor, asking for the province's legislative assembly to dissolve on Thursday. This will mark the beginning of the 2014 New Brunswick election campaign, which is scheduled to occur in just over one month's time, on September 22nd. The 2014 election will be fought over new electoral district boundaries, which were set by a commission last year. In total, New Brunswick Legislative Assembly will be reduced in size from 55 seats to 49 seats, meaning there will be six fewer ridings in the province. In a rare move in Canadian history, the redistribution saw a complete re-draw of the electoral map, due to the dramatic decrease in the number of ridings.

The decrease in the number of seats in the Assembly hurts the depopulating north the most, as Northern New Brunswick loses two seats with the redistribution (going from 10 to 8). Next door Miramichi is also badly hurt by the redistribution, as it sees a 25% reduction of seats, going from four seats to three. The Upper Saint John River Valley, Central New Brunswick (Fredericton area) and Southern New Brunswick (Saint John) all lose one seat a piece. No regions of the province sees a gain in seats, but Southeast New Brunswick, which includes the Greater Moncton Area, sees a net gain/loss of zero seats. 

Actual 2010 election results


Due to these changes, I took the initiative to calculate the results of the last provincial election in 2010 and transpose them on the new boundaries. Unfortunately, Elections New Brunswick did not publicly release their own transposition numbers, unlike some other provinces. I'm not the only blogger to do to a transposition, nbpolitico did one (but he's only providing more detailed numbers at a cost) and Blunt Objects did one as well, free of charge (much to my chagrin, as I had already started on this project, not realizing someone else would do it!). Interestingly, both nbpolitico and Blunt Objects show different numbers than in my transposition. They obviously used a different methodology than myself, so all my effort was not all for naught. 


Methodology


To calculate my transposition, I identified which polling divisions would be going into which new riding, which was usually quite simple, but involved some guess-work, as in many cases, the new boundaries split up polling divisions. Then, I added up the results from the 2010 election from these polling divisions based on the new ridings they were in. But, that did not account for all of the votes cast in 2010. I had to account for advance votes and special votes (prisoners, military personnel, people living abroad). Advance votes were cast in larger polling divisions. Elections New Brunswick usually identified which polling divisions the advance voting divisions covered. When an advance polling division was entirely in a new riding, I added its result to the total for the new riding. When it spanned more than one new riding, I redistributed the results based on the ratio of the results in the regular polls they overlapped with. With the special votes, which were not allotted to any individual riding, I redistributed the results based on the same ratios as the regular votes cast in the riding. For example, if 40% of the Liberal regular votes in a riding were redistributed into riding “A”, than 40% of the special votes cast for the Liberals were allotted to riding “A”.

According to my redistribution methodology, the Liberals would have won 11 of the new ridings, while the Progressive Conservatives would have won 38. This would be two fewer seats for the Liberals from their actual 2010 total (13), and four fewer for the Progressive Conservatives, who won 42 seats in 2010. This shows that the new map is relatively fair, as it takes seats away from both parties. 



In Northern New Brunswick, the Liberals would have won just three seats, two fewer than the five they actually won in 2010. The Tories however, would retain their five seats. In Eastern New Brunswick, the Liberals would have won five seats on the new boundaries, down from seven which they actually won. This is beneficial to the Tories, who would win an extra seat from the Liberals in the Moncton area. Boundary changes in the rest of the province were more beneficial to the Liberals, where they won just one seat in 2010. The new boundaries would have given them two new seats, Fredericton South and Saint John Harbour. Changes in the rest of the province hurt the Tories the most, as they would see a reduction of five seats there.

The other parties in New Brunswick did not win any seats in 2010, and would not win any with the new boundaries either. The best result for the NDP would be in Tracadie-Sheila, where they won 33%, thanks to their leader, Roger Duguay having ran there. The Green's best result would be in Fredericton South, where they won 13% in 2010. Fredericton South contains the more progressive parts of Fredericton, taking in parts of the former ridings of Ferericton-Silverwood and Fredericton-Lincoln. The populist People's Alliance Party saw their best result in Fredericton-Grand Lake (14%), which contains part of the former riding of Grand Lake-Gagetown, where their leader Kris Austin ran.

Redistributed results of the 2010 New Brunswick election on the new ridings being used in 2014.

According to my transposition numbers, the closest of the new ridings on the new map would have been Moncton Centre, where my numbers show the Tories winning by just 6 (0.1%) transposed votes! Moncton Centre contains parts of the Liberal riding of Moncton East and the Tory riding of Moncton North. Interestingly, the incumbents from both Moncton East and Moncton North will duke it out to see who will win the new riding. The next closest riding would have been Saint John Harbour, where my numbers show the Liberals having won by 0.16%. This would be a gain for the Liberals, as the riding on its old boundaries elected a Tory in 2010. Fredericton South also saw a close race, with my transposed numbers showing the Liberals having won it by just 0.17% on the new boundaries. The new riding contains the most Liberal parts of two current PC-held ridings, Fredericton-Silverwood and Fredericton-Lincoln. Other close ridings were Fundy-The Isles-Saint John West (Liberal by 1.3%), Miramichi (Liberal by 1.3%), Bathurst West-Beresford (PC by 1.8%), Campbellton-Dalhousie (PC by 2.95%) and Shediac Bay-Dieppe (Liberal by 3.8%).

The 49 new ridings (click to enlarge)

Throughout the election campaign, I will be using my calculated numbers to do my seat projection forecasts for the election. However, there have yet to be any recent polls released in the province, so I will not be doing any projections until they are released. (Any poll conducted before Labour Day should be treated with a grain of salt, anyways).