How many days has Barack Obama served in the US Senate?

Obama was sworn in as a Senator on January 4, 2005.

You can do the counting yourself, but as of today (August 11, 2008) I count 3 years, 7 months, 7 days. As of today, that makes 1,318 days.

Actually, this is a gross overstatement.

If you consider only the number of work days in the senate from the time of his election until he formed his presidential campaign, Obama served 144 days in the senate. McCain has served just under 2,000.

Actually, you undershot it... it was 1413 days :)... the answer was just on a quiz show :D