No, he didn't.<quoted text>
Look 47 per center Obama quit the senate to run for president.
Another teabagger media lie.
Nov 13, 2008
President-elect Barack Obama submitted his letter of resignation from the U.S. Senate this afternoon, effective Sunday.
Obama’s running mate, Vice President-elect Joe Biden, has yet to resign from his Senate seat, to which he won re-election for a seventh term on the same day he was elected vice president.
WTF does that mean?