The campaign to fund her future opponent passed the $2 million threshold right around the time the senator announced at the end of Friday's floor speech that she would vote to confirm.
In a statement, Ms. Kordestani called the outage "an unfortunate side effect of the tremendous surge in participation we've seen since Kavanaugh's nomination".
Pumping their fists and carrying signs, a few hundred people climbed the east steps of the Capitol for the demonstration.
He spoke of "intimidation by the mob" and said the Senate vote should be one "to turn away from darkness". More than 300 have been arrested in anti-Kavanaugh protests this week in the nation's capital. In between, a line of Capitol police officers is standing with plastic handcuffs clipped to their belts.
None of them could answer the question at the heart of their decision to support Kavanaugh: whether they believe Ford is lying, or whether they believe she is telling the truth but that her allegations don't matter for judging the character of a nominee to a lifetime seat on the Supreme Court.
"Certain fundamental principles about due process, the presumption of innocence, and fairness do bear on my thinking, and I can not abandon them", Collins said while addressing the central matter that delayed and almost derailed the nomination: Christine Blasey Ford's allegation that Kavanaugh sexually assaulted her at a high school party decades ago.
Media captionDonald Trump's nominee has been embroiled in a bitter battle over sexual assault allegations. She and Kavanaugh testified at a raucous September 27 hearing, where he angrily and tearfully denied her allegations.
The accusations against Kavanaugh energized the #MeToo social media movement that emerged after high-profile accusations of sexual assault and harassment by men in politics, the media and the entertainment industry. But Collins said witnesses Ford had identified who were interviewed by the Federal Bureau of Investigation last week and included in a report the agency gave lawmakers had failed to corroborate Ford's claims. If a simple majority of the upper chamber votes in favor, the Senate will be able to advance to a final confirmation vote as early as Saturday.
One senator calling him out for his behavior was Sen. In 1881, Justice Stanley Matthews prevailed in a vote of 24-23.
Among current justices, the confirmation of Clarence Thomas in 1991 was the closest, with a vote of 52-48. This was a cloture vote, ending floor debate on the nomination. Mr Kavanaugh actually only needed a 50-50 vote, as that would have forced a tie-breaker in his favour from Mr Pence. Add Supreme Court as an interest to stay up to date on the latest Supreme Court news, video, and analysis from ABC News.
The reaction has been swift, with former President George Bush and White House Press Secretary Sarah Sanders both tweeting their support for Collins.
The first lady is wrapping up a four-country tour of Africa.
"You heard a survivor tell a credible story of sexual assault", she said.
"From the start of this process, I promised my constituents that I would look seriously at Judge Kavanaugh's record and cast my vote based on the facts I have before me and what is best for West Virginia".
Kavanaugh's confirmation is not yet a done deal.
Republicans can only lose a single GOP vote if all Democrats vote against the nomination.
Sen. Kirsten Gillibrand (KEER'-sten JIHL'-uh-brand) of NY says there's one fundamental question for senators when they decide Kavanaugh's fate: "Do we, as a country, value women?".
Ford's allegations disrupted what had appeared to be a relatively smooth confirmation process for Kavanaugh. He's emphatically denied the accusations. "The demons shrieking in the Senate Gallery know their time is short", he quipped.
Brett Kavanaugh seems assured of surviving a Supreme Court nomination fight for the ages after two wavering senators said they'd back him. Jeff Flake, R-Ariz., said he would vote for Kavanaugh "unless something big changes".
Their support makes Saturday's vote to confirm Kavanaugh a formality.
Republicans hold a bare 51-49 majority in the Senate.
The result was not in serious doubt after a group of potential Republican swing voters confirmed on Friday that they would go ahead with President Donald Trump's nominee, following an investigation by the FBI that failed to unearth evidence of sexual assault.