Shadow Home Sec. David Davis Resigns
David Davis, shadow home secretary resigned and triggered a by-election (special election) last week on the issue that the government was going to extend the 28 days detention for terror suspects without charge to 42 without any clear evidence or reason.
I don't think it's a political stunt, he does seem to care about this issue quite a lot. Nick Robinson, political editor of the BBC called it "without precident" (although it has happened twice before).