Transcript for Vacant Supreme Court seat energizes Trump supporters
We begin with the supreme court battle heating up, just two days after the death of justice Ruth Bader Ginsburg. Justice Ginsburg's passing representing a seismic event. Leaving a constitutional and cultural void. The new images inside the supreme court. You see them here, her place on the bench draped in black. With election day just 44 days away, president trump vowing to nominate a woman within the coming days. The president hoping to secure a 6-3 conservative majority on the bench. ABC news learning Amy coney Barrett is the front runner. Mitch Mcconnell promising the senate will vote even with the election under way. Joe Biden saying to do that would be an abuse of power. Nancy Pelosi promising a fight. Here's Rachel Scott, leading us off. Reporter: Just 44 days out from election day, president trump using justice Ruth Bader Ginsberg's vacant supreme court seat to energize his base. Fill that seat! Fit that seat! Reporter: In the hours after her death, crowds at his North Carolina rally calling on him to "Fill that seat." We're going to fill the seat. I love that chant. Reporter: His campaign already printing the message on t-shirts, selling them online. But there are cracks in the Republican party. Tonight, Lisa murkowski joining Susan Collins, saying she will "Not support taking up a potential supreme court vacancy this close to the election." Republicans can only afford to lose the support of three senators. Vice president Mike pence would break a tie. The president's rival Joe Biden is calling on Republicans to let Americans' voices be heard. I'm speaking to those senate Republicans out there who know deep down what is right for the country and consistent with the constitution. Reporter: Democrats accusing Republicans of hypocrisy after senator Mitch Mcconnell blocked the senate from even considering president Obama's pick months before the 2016 election. This weekend, protesters gathering outside of his home in Kentucky. President trump is set to announce his pick to replace Ginsburg in the coming days. It will be a woman. A very talented, very brilliant woman, who I haven't chosen yet, but we have numerous women on the list. I built this incredible list of brilliant people. Reporter: Sources tell us these three conservative judges top that list, with Amy coney Barrett as an early favorite. House speaker Nancy Pelosi signaling Democrats will do whatever it takes to stop Republicans from jamming this nominee through, not ruling out using impeachment to try to keep the senate from acting. We have our options, we have arrows in our quiver. Reporter: Pelosi joining hundreds of Americans paying their respects to Ginsburg at the supreme court. Ruth Bader Ginsburg's legacy will live long beyond this election. The impact she's had on American society is not just about a single election. Rachel, joining us live from the supreme court. In justice Ginsburg's final days, her family is saying she passed along one last message? Reporter: She knew her death would have a tremendous impact on politics and on the country. Her granddaughter said in her final days, she said her most fervent wish is not to be replaced until a new president is installed. Today, the vice president's chief of staff said while we do mourn as a nation, that decision does not lie with her. Tom? Rachel, thank you. Plans for a public memorial for justice Ginsburg are still
This transcript has been automatically generated and may not be 100% accurate.