Politician and political staff held up in hole, leaving (10)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

MP (Member of Parliament, “Politician”) + MACE=”political staff”; both reversed/”held up”, in DENT=”hole” MACE as in the ceremonial maces (“staff” as in a rod / a blunt weapon) used in the Houses of Parliament [wiki]