bed-blocker
n.— «Many veteran Conservative MPs who might have been expected to retire from the fray at the next General Election, are obdurately staying put.…Since Tony Blair is unlikely to send them to the House of Lords on retirement, they are opting to stay in the Commons, to while away their twilight years.…They are aptly known as “the bedblockers.”» —“Politics Column” by Chris Moncrieff Scotsman (U.K.) May 10, 2004. (source: Double-Tongued Dictionary)