Blackburn defeated Democrat Phil Bredesen by 26 points, 62 percent to 36 percent.
Trump was in Tennessee on Sunday night as part of his six day, 11-rally swing as he attempted to shore up the GOP majority in the Senate to act as a wall in case Democrats won the House.
And Swift took to Instagram on Election Day, posing for a photo with a Bredesen campaign sign as she encouraged her followers to vote.
Republican candidate Marsha Blackburn shook off Taylor Swift’s foray into politics to win election Tuesday night
Last month, Taylor Swift dipped her toe in politics when she took to Instagram to endorse Democrat Phil Bredesen
Phil Bredesen votes Tuesday in Nashville
Last month, Taylor Swift dipped her toe in politics when she took to Instagram to endorse Bredesen.
‘As much as I have in the past and would like to continue voting for women in office, I cannot support Marsha Blackburn. Her voting record in Congress appalls and terrifies me,’ the 28-year-old artist wrote in a post on Instagram.
‘She voted against equal pay for women. She voted against the Reauthorization of the Violence Against Women Act, which attempts to protect women from domestic violence, stalking, and date rape.
‘She believes businesses have a right to refuse service to gay couples. She also believes they should not have the right to marry. These are not MY Tennessee values.’
But Blackburn made her closing argument to voters about Hillary Clinton.
She told a cheering crowd at the Chattanooga event with Trump on Sunday: ‘And if you want to vote no on Hillary Clinton and her cronies one more time, stand with me and let’s win this election!’
Blackburn is close to the Trump family. She has worked with Ivanka Trump on child care issues.
Swift also explained why she was finally speaking out about her political views, something she had previously received intense pressure to do.
‘In the past I’ve been reluctant to publicly voice my political opinions, but due to several events in my life and in the world in the past two years, I feel very differently about that now,’ she wrote.
Trump was campaigning in Tennessee along GOP Rep. Marsha Blackburn on Sunday
Taylor Swift makes last-minute plea to fans on Election Day
Swift said she got involved in politics for women’s issues and LBGT issues
‘I always have and always will cast my vote based on which candidate will protect and fight for the human rights I believe we all deserve in this country.
‘I believe in the fight for LGBTQ rights, and that any form of discrimination based on sexual orientation or gender is WRONG. I believe that the systemic racism we still see in this country towards people of color is terrifying, sickening and prevalent.’
It did not take long for Trump to respond to Ms Swift’s Instagram post last month, saying the pop star ‘doesn’t know anything’ about Congresswoman Blackburn.
President Trump said Blackburn ‘is doing a very good job in Tennessee. She’s leading now substantially, which is good. She’s a tremendous woman.’
‘I’m sure Taylor Swift has nothing, or doesn’t know anything about her. And let’s say that I like Taylor’s music about 25 per cent less now, okay?’ the president grinned.