Supreme Court nominee Brett Kavanaugh met Tuesday with Republican Sen. Susan Collins of Maine, a centrist who's seen as a potential swing vote on his confirmation, while Democrats push him to release more documents from his years in the George W. Bush White House.

Collins supports abortion rights and has vowed to oppose any nominee who has "demonstrated hostility" to Roe v. Wade. But she has spoken highly of President Donald Trump's nominee, saying he's qualified for the job.

The meeting Tuesday comes as Kavanaugh, an appellate court judge, is making the rounds on Capitol Hill ahead of confirmation hearings in September. One key meeting will be with Senate Minority Leader Chuck Schumer, D-N.Y., who says he'll ask Kavanaugh to fully support releasing documents from the Bush White House that Republicans have declined to review.

Schumer said he will ask Kavanaugh, as he has Republicans, "What are they hiding?" He expects the judge to be able to fully explain his record. "I hope he comes prepared to answer direct questions," he said.

Democrats complain that Republicans, who have a slim 51-49 majority in the Senate, are withholding documents in their rush to confirm Trump's pick for the court ahead of the midterm elections.

Kavanagh, 53, is a conservative who, in replacing retired Justice Anthony Kennedy, could tip the court rightward for a generation.

Several Democratic women senators joined with advocates for women's health care Tuesday to talk about the stakes of adding Kavanaugh to the court, particularly when it comes to access to abortion services.