For those of a 'Clean House' disposition, this will be very welcome news indeed, for obvious reasons. For the two main parties it will be a mixed blessing. If Labour is reduced to around 200 seats, a large number of those will be new faces. No wonder putative leadership candidate Ed Balls (no, don't laugh) is spending much of his week on the rubber chicken circuit, buttering up likely new MPs.
For the Conservatives the situation will be even more stark. If they get 350 MPs the likelihood is that more than 200 of them will be newbies. Indeed, we're getting to a situation where David Cameron may have to make a few first time MPs ministers.
It will be interesting to see how this intake of MPs asserts itself - on both sides of the House. If they take a stand against some of the older ways of doing things they could make a real difference. The crucial thing will be how many of them take the whips' shilling and are determined to climb the greasy pole of promotion at the first available opportunity.
The situation is slightly comparable to the 1983-87 Parliament, which contained a large number of Tory MPs who had never expected to be elected in the first place - people like Cecil Franks in Barrow and Gerry Bowden in Dulwich. There were a number of MPs who knew the way to get promotion was to be viscerally loyal and do the whips' bidding at every available opportunity. Michael Howard, Patrick Nicholls and Edwina Currie were the most obvious examples of this tendency, and sure enough, if my memory serves me correctly, they were among the first to be made PPSs and then ministers. Perhaps PoliticalBetting.com should run a book on the most likely equivalents of the 2010 Tory intake.