Paul Waugh, who has consistently provided excellent bits and bobs from Westminster, says that "the word in Westminster is" (as they say) that a Cabinet Minister will resign as soon as the polls close at 10pm tonight.
This came to me via Twitter.
Incidentally, you can see a collection of most of the LibDem Twitterers here. All their Tweets scroll up as they happen. They are in overdrive today from various committee rooms, polling stations, phone canvassing banks etc etc.
I am a great fan of James Graham's Tweets. A couple hours ago he tweeted with this classic:
Darwinian selection in action in our electoral system. UKIP voters confused by 'folding': http://tinyurl.com/pm262j