Vice Presidents are elected, not appointed. Therefore, the current occupant would have to resign. (This does not preclude the Democratic Party from nominating someone else for election in November 2012.)
Obama's VP was Joe Biden.
If Obama were to die, Joe Biden would become president and he would nominate someone to be VP.
Joe Biden
The VP, and if he dies, the Speaker of the House
I suppose he could, however it would be a long process and would make some Americans mad. Also, currently Barack is very fond of his VP, Joe Biden, so he wouldn't "swap him out."
McCain's VP -- Sarah Palin (Alaskan Governor) Obama's VP -- Joseph Biden (Senator of Delaware)
because she's not good enough.
President: Barack Obama VP: Joe Biden
then the vp of usa will become president if he is killed.
Barack H. Obama, VP Joseph Biden.
Joe Biden is the current VP under Obama for the 2012 election.
The president is Barack Obama and the vice president is Joseph Biden. They are Democrats.