Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE's top campaign aide said on Sunday he expects the Democratic presidential front-runner to get the delegates needed to secure the Democratic nomination after Tuesday's primary contests.

"We think we're going to come out of Tuesday night with the delegates we need for her to be the first woman nominee on a major-party ticket in the United States," Clinton's campaign chairman, John Podesta, said on "Fox News Sunday."

ADVERTISEMENT

"So we're looking forward to that."

Several states, including delegate-rich California, will hold primaries on Tuesday. Both Clinton and rival Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE have been campaigning in the Golden State ahead of the primary.

Podesta touted Clinton's lead over Sanders, saying it is the Vermont senator's decision about whether or not to stay in the race until the Democratic National Convention in late July. But he emphasized that Clinton will have the delegates necessary to be the Democratic nominee.

He said Clinton's campaign will do everything it can to reach out and appeal to Sanders supporters.

"We want to bring this party together, because the country faces a major threat in [presumptive GOP presidential nominee] Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE," Podesta said.

"And we hope that he will join us. He's been out there saying that he wants to work seven days a week to stop Donald Trump, and we hope that starting as soon as possible, that he will go ahead and fulfill that commitment and work with us."

Podesta also said the general election is "just coming into focus," brushing off poll numbers that show the race between Trump and Clinton tightening.

"He has consolidated Republicans and that's led to something of a tightening of the polls," he said.

"But this has really just begun."