Liberals who oppose Mr Kavanaugh's nomination have raised $900,000 (£690,000) for Senator Collins' opponent's campaign in the 2020 election, in a bid to pressurise her to vote against the nomination. If she votes yes, however, all of the money - which, on Tuesday, officially stretched into excess of $1 million - will be donated to the campaign of Collins' future 2020 opponent.
According to the campagin's page at Crowdpac, the money would only go to the Democratic nominee, not to a Republican challenger. The group isn't actually giving her something of value in exchange for the no vote on Kavanaugh; they're promising not to spend the money they've collected against her.
In fact, this is a popular myth that's been long discredited. Rather, if she votes against Kavanaugh, the GoFundMe campaign will refund all the donations to those who contributed.
One of the world's most successful professional dog mushers is speaking out against the nomination of Brett Kavanaugh to the Supreme Court.
In reality this isn't all that much different than the money that Collins has raised from donors such as General Dynamics, MBNA Corp, Elliott Management, and Blue Cross/Blue Shield.
But now, activists are urging Collins to vote "no" on Kavanaugh, with Republicans holding a slim 51-to-49 majority in the Senate.
The new ad buy comes as Collins is facing an onslaught of pressure to oppose the nomination.
For liberals concerned about what a seat for Kavanaugh would do to the court, Collins has been both a source of limited hope and frustration, expressing concerns about threats to Roe vs. Wade, while consulting with the Trump administration through the selection process. A MetroNews poll, for example, had Manchin ahead by 8%. Although Obama won IN in 2008, the state is heavily Republican. The centrist Heitkamp won by only 1% in 2012, and in 2018, she is in a very close race with Republican nominee Kevin Cramer-who is painting himself as reliably pro-Trump in the campaign.
"I always wait until after the hearings are complete before making a decision, and I'll do so in this case as well", she said.
Alex Henderson is a news writer at AlterNet and veteran political journalist.