(CNN) Progressive activists and other left-leaning outside groups are ramping up their efforts to convince a bipartisan band of swing senators to vote against the confirmation of Supreme Court nominee Brett Kavanaugh.

Their 11th-hour efforts -- mostly targeting Republican Sens. Lisa Murkowski of Alaska, Susan Collins of Maine and Arizona's Jeff Flake, along with uncommitted Democratic Sens. Joe Manchin of West Virginia and Heidi Heitkamp in North Dakota -- got another surge of adrenaline on Tuesday night, when President Donald Trump mocked Christine Blasey Ford, the California psychology professor who testified that Kavanaugh sexually assaulted her when they were teenagers.

Less than two hours after Trump spoke in Mississippi, the liberal group Demand Justice posted a digital ad with a recording of the President's words played over a black and white still image of Ford -- eyes closed, right hand raised -- before she gave her opening statement last week.

"Trump mocking Dr. Blasey Ford at a rally makes it clear: if these so-called Senate moderates vote for Kavanaugh now, they are siding with Trump's cruelty over the bravery of a sexual assault survivor," said Brian Fallon, a former spokesman for Hillary Clinton and the Justice Department, who leads the new nonprofit.

The ad, he said in a tweet when it was first posted, will target voters in Maine, Alaska and Arizona.

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