Susan Collins and Troy Jackson clash over protester in Maine debate

A protester interrupted the final debate between Republican Sen. Susan Collins and Democratic challenger Troy Jackson in Maine, triggering a heated exchange after Collins suggested the demonstrator was a Jackson supporter. The interruption came amid a debate that saw the candidates trade fire over numerous issues. The race between Jackson and Collins, who is seeking a sixth term representing the blue-leaning Northern New England state, is a top flip opportunity for Democrats as they try to win back the Senate majority from Republicans in the midterm elections. The latest public opinion polls indicate a race within the margin of error between Collins and Jackson, a one-time logger and former state Senate president. The latest Fox News Power Rankings rate the race as a toss-up, as do leading nonpartisan political handicappers the Cook Political Report, Inside Elections and Sabato's Crystal Ball.