Trying to remember joke about politicians, rabbi, priest, and a parachute?

Can anyone help me remember this joke? It was about some politicians and a priest and a rabbi in a plane, and the plane was going to go down, and they were one parachute short... the rabbi (or priest) said "I am not afraid to die, you take the last parachute..." or something like that... and I think the punchline involved the politician... I used to think it was sooo funny and now I can't even remember it! Anyone know it? Thanks!