Swift, 28, has notably stayed out of the USA political fray in contrast to her more vocal peers, like Democrat supporters Katy Perry and Beyonce, and Donald Trump backer Kanye West, who is scheduled to sit down with the President on Thursday.
While Swift's post did show her own preferences, she ended her statement with a more general message of engaging in politics.
Model Chrissy Teigen, actress Blake Lively and singer Perry were among those adding "likes" to Swift's Instagram post.
"I can not vote for someone who will not be willing to fight for dignity for ALL Americans, no matter their skin colour, gender or who they love", she said.
"As much as I have in the past and would like to continue voting for women in office, I can not support Marsha Blackburn", Swift wrote.
"As much as I have in the past and would like to continue voting for women in office, I can not support Marsha Blackburn", she said.
Nadine Hubbs, professor of women's studies and music at the University of MI, and author of "Rednecks, Queers and Country Music, " notes that Swift's statement doesn't ever mention political parties, but instead focuses on issues like human rights, LGBTQ rights, equal pay and racial discrimination.
Blackburn's voting record, Swift wrote, "appalls and terrifies me, " noting Blackburn's votes against equal pay for women and the Reauthorization of the Violence Against Women Act. She believes businesses have a right to refuse service to gay couples. But they also enraged many conservatives, especially those in the country music community where Swift got her start as a teenager and went on to win 10 Grammys.
Last year, Swift won a lawsuit against a former radio DJ she accused of groping her.
"As much as I have in the past and would like to continue voting for women in office, I can not support Marsha Blackburn", Swift told her 112 million Instagram followers.
And it looks like her words have really had an effect.
Kamari Guthrie, director of communications for Vote.org., told Buzzfeed that a spike in voter registration was obvious in Tennessee where 2,144 people registered in the 36 hours since Swift posted. That's more than the amount of registrations from the entire month of August, which was 56,669, and more than a third of the 190,178 that registered throughout September.
Two years ago, Democrats turned million-dollar performances by pop icons such as Beyoncé, Jay-Z, Pharrell, Jennifer Lopez, Bruce Springsteen, Lady Gaga, Bon Jovi and Katy Perry into zero electoral votes. In October alone, the site has reported registering 5,183 in the state. The site's average amount of daily users is 14,078.
She has built a relationship of admiration and mutual respect with a social media following that is three times the size of President Trump's and exceeds the population of all but a handful of countries. Candidates seeking to take maximum advantage of what is a quantifiable increase of interest among young voters in the final weeks of the campaign would be wise to follow Swift's framework.
When asked about Swift's endorsements and her negative comments about GOP Tennessee Senate hopeful Rep. Marsha Blackburn, President Trump was unaware of what had been said. I know plenty of people think that it's ridiculous that 65,000 people needed Taylor Swift to tell them to vote before they did so.