Democratic U.S. Sen. Bob Casey of Pennsylvania has won re-election to a second term.

  

Casey capitalized on high name recognition and strong Democratic voter turnout Tuesday to counter a huge spending advantage by Republican businessman Tom Smith, a tea party favorite.

  

Casey is a former state treasurer and auditor general, and son of the late former governor, Robert P. Casey. He handily beat Republican Rick Santorum in 2006 for a second term.

  

Casey was an early supporter of President Barack Obama and voted for Obama's signature policies, including his health care law and stimulus bill. Smith had been heavily critical of those votes and had pledged to vote to repeal the health care law.