For a minister, the consequences of defying the party whip are absolute: they are dismissed from their job immediately if they have not already resigned, and return to being a backbencher. Sometimes their votes in Parliament are called the "payroll vote", because they can be taken for granted. The consequences for a back-bencher can include the lack of future promotion to a government post, a reduction of party campaigning effort in his or her constituency during the next election, deselection by his or her local party activists, or, in extreme circumstances, "withdrawal of the whip" and expulsion from the party.