The seat forecast site I use the most is May 2015. They have their own forecast and also list five other ones.
Here’s what their final pre-election forecast is:
- Conservatives 273 (33.6%)
- Labour 268 (33.3%)
- SNP 56 (4.4%)
- Lib Dems 28 (8.8%)
- DUP 8
- Sinn Fein 5
- SDLP 3
- Plaid Cymru 3
- UKIP 2 (13.4%)
- Greens 1 (4.8%)
- George Galloway 1
Of the 650 seats, you need 326 to govern. But Sinn Fein tend not to vote or turn up so of 645 votes in play you need 323.
If we look at rough blocs you have:
Right – Conservatives 273 + DUP 8 + UKIP 2 = 283
Left – Labour 268 + SNP 56 + SDLP 3 + Plaid Cymru 3 + Greens 1 + Galloway 1 = 332
Centre – Lib Dems 28
Labour is definitely in a preferred position. Even if the Conservatives get Lib Dems support they are 311 – 12 seats short. They need to beat the poll predictions by 12 seats.
Labour can’t govern without SNP support. Without them they are 276 and even f Lib Dems support are 304.
The SNP has said they will not vote confidence in a Conservative government. Labour have said they will not do any deal with SNP, either coalition or confidence and supply. So SNP has to back a Labour Govt even if no policy deal, or force another election.
It is interesting to consider what the result would be if the UK had proportional representation. Based on the polls, a proportional Parliament (excluding 18 Irish seats) would be:
- Conservatives 212 (vs 273)
- Labour 210 (vs 268)
- UKIP 85 (vs 2)
- SDP 56 (vs 29)
- Greens 30 (vs 1)
- SNP 27 (vs 56)
- Others 11
So a proportional system would see UKIP gain the most, followed by Greens and SDP. The losers would be the SNP, Conservatives and Labour.
However a Conservative government would be more likely, as the blocs would be:
Right – Conservatives 212 + UKIP 85 = 297
Left – Labour 210 + SNP 27 + Greens 30 = 267
Centre – Lib Dems 56
It will be interesting to see the results tomorrow. I’ll be at the UK High Commission and will do a bit of blogging and tweeting during the day. As it is FPP, you should take the projections with caution. There are rarely national swings, and while there has been a lot of electorate polling, some of this is now quite dated. Also turnout motivation may be higher on the right – to stop the SNP having the balance of power.