The first seat to watch is Houghton and Sunderland South. This constituency, when it was known as Sunderland South, was the first to declare the winner and did so every election since 1992. Chris Mullin, the outgoing MP, used to joke about forming his own government during the brief minutes when he was the only elected member of Parliament.
Based on uniform nation swing, Labour will lose its majority if they lose Stourbridge. If the Conservatives win in Dudley South then they will be in the largest party in the Commons and if the Tories are victorious in Derby North then they are assured a majority.
If you are looking for some Bellwether seats then look to see who wins Dartford and Chorley. The winning party has won both of the these seats since 1964. Luton South, and its predecessor seats, are the most reliable bellwether seats. The victorious party has won this seat in every election since 1951.
Since all 3 major parties are significant players in this election there are 3 seats in which all 3 parties poll within 10% of each other. Ealing Central and Acton, Watford, and Filton and Bradley Stoke are the seats to watch get an idea of which of the three parties can expect to have a good night.
Since ministers are member of Parliament, most general elections see a minister or two lose their seats. The Scottish Secretary Jim Murphy in East Renfrewshire and Chancellor of the Exchequer Alistair Darling in Edinburgh Southwest are both considered somewhat vulnerable. However, the most likely to lose their seat is the Minster of Culture, Sports, and Media Ben Bradshaw in Exeter and Children, Families, and Schools minister Ed Balls(who is a close ally of Gordon Brown) in Morley and Outwood. Two former Home Secretaries could also lose their seats. Jacqui Smith in Redditch will almost certainly lose her seat and Charles Clarke in Norwich South could be vulnerable.
It's always good to watch the leaders and how they do. Gordon Brown is in the Scottish constituency of Kirkcaldy and Cowdenbeath, David Cameron represents Witney, and Nick Clegg represents Sheffield Hallam.
I am also interested in seeing if the Green Party can win in Brighton Pavilion and win their first ever seat in Parliament. As Speaker, John Bercow is a non-partisan figure and the major parties don't run candidates against a sitting speaker. However the UK Independence Party is running against Speaker Bercow in the traditional Tory seat of Buckingham. I am also watching to see if the Tories can win back Margaret Thatchers old seat of Finchley and Golders Green.
Finally, I am interested in Penrith and the Border because former army officer, diplomat, best selling writer, Harvard don, and critic of U.S. and UK efforts in Afghanistan and Iraq Rory Stewart is the Conservative candidate and the heavy favorite to win.
Enjoy election day and I hope to join you some tomorrow night to share some of my immediate observations.