Sen. Susan Collins said she had doubts about the Supreme Court nomination of Brett Kavanaugh after Christine Blasey Ford accused him of attempted rape when they were in high school.

She told CNN‘s State of the Union that after hearing Ford‘s testimony that she thought "Oh my goodness" and wondered if he might have to withdraw his nomination.

But she said Kavanaugh‘s forceful denial and lack of corroborating evidence brought her back to fundamental issues of due process, a presumption of innocence and fairness.

Furthermore, the Maine Republican said she believes Ford was attacked, but not by Kavanaugh.

"I don‘t know by whom, and I‘m not certain when," Collins said, adding that she found Ford‘s testimony "to be heart-wrenching, painful, compelling, and I believe that she believes what she testified to."

Ultimately, she voted Saturday to confirm Kavanaugh‘s nomination.

People angry over her vote have vowed to make Collins pay a political price . A crowdsourcing group says it has secured pledges of more than $3 million for her opponent in 2020.

Meanwhile, Senate Majority Leader Mitch McConnell is signaling that a Republican-controlled Senate would act on President Donald Trump‘s nominee to the Supreme Court in 2020, a presidential election year, should a vacancy arise.

McConnell had blocked a vote on Democratic President Barack Obama‘s choice of Merrick Garland to the high court in 2016, citing tradition of not filling vacancies in a presidential election year.

But when asked on "Fox News Sunday" if that would apply in 2020, McConnell said: "We‘ll see if there is a vacancy."

He says in 1880 a vacancy was not filled when the Senate was controlled by the party opposing the president.

Democrats often call McConnell hypocritical on his standard for considering nominees. The two oldest justices are Democratic appointees. Ruth Bader Ginsburg is 85; Stephen Breyer is 80.