McCain's Death Wish

Yesterday it was reported by all the talking heads and news wires that Joe Lieberman is on John McCain's short list for VP. The grassroots Republicans are already uncomfortable with McCain and the Conservative wing is rumbling about sitting out the election.
It would take an awful lot of Democrats switching sides to elect John McCain without the conservative wing. Despite announcing as an Independent, Lieberman caucuses with the Democrats — "Hello, am I missing something?"
Maybe McCain just has a death wish! He has few enough strong points among conservatives so let's balance the ticket by moving left left.
Of course maybe Obama will balance his ticket by picking someone further left than he is — "Opps, I forgot, that's a null set. There is no-one left of Obama, at least not who's an American. Aren't election years fun?!"