Just a couple of days ago, Trump said of Kavanaugh from Egypt, where she ended her first major official trip overseas without her husband President Donald Trump, "I think he's highly qualified for the Supreme Court".
"I think a lot of Democrats are going to vote Republican", the president said, adding: "I have many friends that are Democrats".
White House advisers and Republican senators are encouraging him to keep Kavanaugh in the spotlight in the campaign's final weeks. GOP operatives say they're also seeing renewed Republican interest in states such as Wisconsin, where Democratic candidates for both Senate and governor have been polling strong.
EDITOR'S NOTE - Julie Pace has covered the White House and politics for The Associated Press since 2007. "I think we have a momentum that hasn't been seen in years", he said.
But Democrats say the anger displayed by scores of protesters on Capitol Hill, many of them women, will have a long-term impact.
Trump has been holding rallies across the country as he tries to boost Republican turnout in November's midterm elections that will determine which party will control the House and Senate during the second half of Trump's term.
Kavanaugh, shown here testifying to the Senate Judiciary Committee, has become the latest US Supreme Court justice.
Trump said he once told Kavanaugh that his confirmation would be a "piece of cake".
"The new conservative majority on the Supreme Court threatens a rollback of protections for people with pre-existing conditions, more leverage for corporate special interests over working families, and little hope to reform Citizens United", House Minority Leader Nancy Pelosi wrote in a weekend letter created to galvanized Democrats.
Collins told Bash earlier Sunday morning, "I do not believe that Brett Kavanaugh was [Ford's] assailant. So I want to thank these clowns for all the help they provided".
He said the "tactics" of the opposition "were very helpful, to me, in unifying our side".
To cheers of supporters at the Kansas Expocentre in Topeka, Trump declared it a "historic night", not long after signing the paperwork to make Kavanaugh's status official.
"Judge Kavanaugh's emotional, politically charged and combative defense on September 27 that followed Dr. Ford's appearance was enough to reassure most of the Senate GOP caucus, but it wasn't enough to secure his confirmation".
"I thought that the way they conducted themselves, the way they dealt with a high-level brilliant ... going to be a great justice of the Supreme court, the way they really tortured him and his family, I thought it was a disgrace".
Addressing the convention of International Association of Chiefs of Police in Orlando Monday afternoon, Trump again painted Kavanaugh as a victim.
"It was a disgraceful situation brought about by people that are evil, and he toughed it out", he said.
He is replacing retired Justice Anthony Kennedy, a conservative jurist who often cast the deciding swing vote on ideologically divisive issues, upholding abortion and gay rights and the use of affirmative action aiding racial minorities in college admissions.