While President's Day is kaput - welcome back to work, folks! - you can still vote for your favorite U.S. leader in SFist's "Who's The Greatest U.S. President?" Egos and history are on the line! As of Tuesday afternoon, Franklin D. Roosevelt is in the lead, with Abraham Lincoln trailing behind. Ronald Reagan - who won the title of greatest U.S. President of all time, according to a Gallup poll - has a scant 9-percent of the vote. Select your favorite before 5pm today. Thanks.