Singer Kid Rock blasted Taylor Swift on Twitter Friday over the pop star’s recent interview with Vogue Magazine, in which she expressed why she’s increasingly politically active.

“Taylor Swift wants to be a democrat because she wants to be in the movies….period,” Rock tweeted. The music star also suggested Swift is willing to perform sexual acts to climb her way to the top in “Hollyweird.”

“And it looks like she will such the door knob off Hollyweird to get there. Oldest move in the book. Good luck girl,” Rock added.

Rock, 48, is a well-known Republican who stumped for Republican presidential candidate Mitt Romney in 2012 and was an early supporter of President Donald Trump in 2016.

Rock’s attacks on Swift, 29, come after Swift spoke with Vogue Magazine for the cover story of the publication’s September issue. Swift discussed why she shied away from politics in 2016 and why she’s speaking out now.

“Unfortunately, in the 2016 election you had a political opponent who was weaponizing the idea of the celebrity endorsement,” Swift told the magazine, speaking about Trump using Hillary Clinton’s celebrity endorsements as evidence of Clinton’s elitism. “I just knew I wasn’t going to help.”

Since the 2016 election, however, Swift has not been shy in weighing in on the issues of the day, speaking out against guns in March 2018 and soon releasing an album with political undertones called “Love.”

In 2018 midterm elections, Swift also endorsed Democratic U.S. Senate candidate Phil Bredesen in Tennessee against then-Rep. Marsha Blackburn (R-Tenn.). Bredesen, a former governor of the state, ultimately lost to Blackburn by more than 10 percent.

After winning the election, Blackburn brushed off the Swift endorsement of her opponent. “Well, I hope Taylor will shake it off,” Blackburn said on “Fox and Friends,” in reference to one of the musician’s most popular songs.

Blackburn repeated the zinger last week at the Young America’s Foundation’s National Conservative Student Conference in Washington D.C. when a student asked how the senator felt about Swift supporting Bredesen in the race.