Sen. John McCainJohn Sidney McCainRubio asks Army to kick out West Point grad with pro-communist posts The VA's woes cannot be pinned on any singular administration Overnight Defense: Mattis offers support for Iran deal | McCain blocks nominees over Afghanistan strategy | Trump, Tillerson spilt raises new questions about N. Korea policy 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.