Weatherman's forecast for election day polling
3 May 2012 Last updated at 13:46 BST
Weatherman John Hammond gives a forecast with a difference - looking at the chances of sun and rain over the seats of the political leaders - as some reckon the weather can affect how people vote.
BBC1's election programme runs from 2335 BST on Thursday until around 0400 Friday. There will be hour-long shows on BBC2 on Friday, starting at 1200, 1400 and 1700.