Scott Brown releases fourth TV ad.

Republican Senate candidate Scott Brown released his fourth television ad today.

The spot, called "Momentum," features Brown campaigning in South Boston on recent winter day, shaking hands with voters and knocking on doors.

"If you want someone who's going to lower your taxes and bring common sense back to Washington, then join with me," Brown says. "I can't do it alone, I need your vote."



If one thing is certain about Tuesday, it's that Brown's media team is going to be fielding plenty of offers from GOP candidates.  Another great ad.