Parliamentary petitions

[mtread]

Of course not, they leave the party they were in when they got elected - triggering a by election -they stand as an independent - or the new party they jumped to.

Martin Bell didn't, and he unseated one of the worst Tory then UKIP criminals of the lot.
One of the biggest problems is MPs not behaving as individuals and just following the party whip. In my constituency you could put an idiot in a suit with a blue rosette and they would be voted in. O hang on, they have