Meanwhile, Labour's odds have shortened in the last 24 hours, from 7/4 to 13/8. Ukip gets just 100/1 - although both the Lib Dems and the Green party suffer the indignity of odds of 500/1.
If the bookies are right, it looks set to be another hung parliament: the odds of no overall majority are at a paltry 1/5. The odds also favour a Labour minority government, at 2/1, with a Conservative equivalent at 5/2.
No wonder they say the outcome of this election is the most difficult to predict in a generation - although that, presumably, is also the reason gamblers are expected to punt £100m on the election.
In fact, added Ladbrokes, the election is about to become the biggest non-sporting events in history. That figure is twice the £50m fluttered on the Scottish referendum, and more than three times the £30m bet on the General Election in 2010.
Just don't forget to vote...