The ghost at the party - running mates

There has been, perhaps appropriately at this stage, no substantive talk of the issue of Vice-Presidential running mates for the lead candidates in the US election.  Much was made of the Democrat debate where Clinton and Obama were posed the question of working together and their diplomatic dance which ensued.

Yet, with John Edwards departing the race it does raise the question - who would the front runners take as running mates ?  It is curious that Edwards has not declared in favour of Clinton or Obama having departed the race before the key test tomorrow.

California is a key state and Governor Schwartznegger has declared for John McCain - yet as he was not born in the USA cannot run with the Senator.  Perhaps a role as Head of Homeland Security or Secretary of Defense would be appropriate (one can but dream of the ensuing headlines...).