Sen. John McCainJohn McCainLawmakers wary of Trump escalation in Syria Senators urge Trump to do right thing with arms sales to Taiwan Changing America: America’s growing education divide MORE (R-Ariz.) began airing his second TV ad to focus on the proposed Woodstock museum Friday in New Hampshire.

Earlier this week McCain began airing an ad in which he criticizes Sen. Hillary Rodham Clinton's (D-N.Y.) support for a federally funded Woodstock museum in upstate New York.

The second ad leads with a narrator calling Woodstock "a cultural event that defined a generation" before discussing the museum's cost, whereas the first ad featured McCain calling the concert a "pharmaceutical event" in the Oct. 21 GOP debate.