Patrick Murphy wins Florida Democratic Senate primary

U.S. Rep. Patrick Murphy has won the Democratic nomination to face Republican Sen. Marco Rubio.

Murphy defeated fiery liberal Rep. Alan Grayson on Tuesday, aided by the backing of President Barack Obama, Vice President Joe Biden and Senate Minority Leader Harry Reid.

Murphy appeared confident in the final weeks of the election, virtually ignoring Grayson and focusing instead on Rubio.

Murphy was first elected to the House in 2012, defeating incumbent tea party conservative Allen West.

While Grayson has more consistently voted for Democratic priorities and Obama's agenda, many party leaders thought he was unelectable because of his brash demeanor.

Murphy has criticized Rubio as caring more about his political ambitions then his constituents, while Republicans have criticized Murphy for embellishing his resume and lack of experience.