The other two are Hilary Clinton and Barack Obama.
The three that get the most media coverage, anyway. I'm sure there are more.
( Bob Todd whee, Wed 13 Aug 2008, 21:58, archived)

Eh?
Both of 'em?
( Nickalollyoff http://seventrousers.wordpress.com, Wed 13 Aug 2008, 22:01, archived)

Clinton's out.

( nick the greek, Wed 13 Aug 2008, 22:01, archived)

Clinton's dropped out now though hasn't she?
There's a fuckload more, but none of them stand the slightest chance
( the wub - guide onion for the blind, Wed 13 Aug 2008, 22:01, archived)

Hate to disappoint you
There are 2 main presidential candidates, Clinton conceded to Obama a while ago.
You could count 3 at a push if you count Nader.
(Evilweevil is covered in bees, Wed 13 Aug 2008, 22:01, archived)

or Bob Barr
but he's got a cat in hells chance
( M3Essential and The Essentials. LIVE!, Wed 13 Aug 2008, 22:02, archived)

or Cynthia McKinney
or Hillary Clinton if she gets the superdelegate vote at the Democrat conference in Denver.

She's far from out of the race
(clut, Sat 16 Aug 2008, 7:38, archived)

technically, she's still in the race
she's conceded the popular vote but is technically still available
( deodar ant the horror, the horror, Wed 13 Aug 2008, 22:16, archived)