In the elections for a new leader, in all the main parties, an MP who votes for a candidate who then drops out gets an equal vote with everyone else in the next round. This is not undemocratic. On the contrary, it produces the most representative leader and is therefore extremely democratic. AV is the same.

"The no campaign will probably not put it so indelicately themselves, but they are calculating that their best hope of preserving first past the post is to mobilise what you could crudely call the Thicko Vote."

http://www.guardian.co.uk/commentisfree/...ral-reform