Pennsylvania U.S. Senator Bob Casey wins a second term in office. Casey won the election against Republican challenger Tom Smith. He held a victory party in Scranton on Tuesday night, where he thanked Pennsylvanians for supporting him once again.

"The people of Pennsylvania have given me the rare privilege to serve them in three offices; I've served them as Auditor General, as State Treasurer and in the U.S. Senate and to now be re-elected, that's a great honor for me," Casey said to the crowd.

He also pledged to do more work when he heads back to Washington, D.C.

"The job of putting this country back to work is not yet over, as a member of the U.S. Senate, just re-elected, I know that will still be my number one obligation, we have a lot more work to do when we go back," he said.

The 52-year old Casey has been in the U.S. Senate since 2007.