Sen. Bernie Sanders said Sunday that he plans to meet Tuesday night with Hillary Clinton about her agenda as the Democratic presidential nominee and will make other decisions about the future of his campaign after that.

“I simply want to get a sense of what kind of platform she will be supporting, whether she will be vigorous in standing up for working families and the middle class, moving aggressively in climate change, health care for all, making public colleges and universities tuition-free,” Sanders, an independent from Vermont, said during an appearance on NBC’s “Meet the Press.” “And after we have that kind of discussion, and after we can determine whether or not we are going to have a strong and progressive platform, I will be able to make other decisions.”

Sanders told host Chuck Todd that he will have more than 1,900 delegates at the convention and that he needs to determine “what kind of agenda there will be if Secretary Clinton gets elected, if she wins the election.”

Also Sunday, Reuters reported that more than three-quarters of Democrats say Sanders should have a “major role” in shaping the party’s positions, while nearly two thirds say Clinton should pick him as her running mate, according to a Reuters/Ipsos poll.

In a sign that Democrats hope their party can unite after a fierce primary season, two-thirds also said that Sanders should endorse Clinton, a former secretary of state and senator who appears bound for a showdown with Republican Donald Trump in the November election, Reuters reported.

The poll, conducted June 7-10 — right after Clinton sewed up the delegate majority to become the presumptive Democratic nominee — showed that while most Democrats want Sanders to line up behind Clinton, about 44 percent would like him to make an independent run for the White House. Some 47 percent said he should not.

The poll included 455 respondents and has a credibility interval, a measure of accuracy, of 5.3 percentage points.

During a separate TV appearance Sunday, Sanders said he thinks it is “very unlikely” that Clinton would pick him as her vice presidential running mate.

Asked about the prospect of Sen. Elizabeth Warren, D-Mass., filling that slot, Sanders said on ABC’s “This Week with George Stephanopoulos” that he is a “great admirer” of Warren.

Asked on the same show if Clinton is capable of leading a “political revolution” — a phrase that has motivated Sanders’s campaign — Sanders said she was not, but that she could implement some solid progressive policies.

“Will she go as far as I would like her to go? No, she won’t,” Sanders said.

The interviews are his first since Sanders met with President Barack Obama on Thursday, the same day that Obama, Vice President Joe Biden and Warren endorsed Clinton.

The senator from Vermont said Thursday that he plans to compete in the final Democratic primary of the year, Tuesday in the District of Columbia, making good on his pledge to stay in the race until all voters have had a chance to weigh in on the nomination.

Sanders previously vowed to stay in the race until the convention, in a last-ditch attempt to win the nomination by flipping the allegiances of hundreds of superdelegates who’ve previously announced their support for Clinton, the party’s presumptive nominee.

He made no mention of that during his “Meet the Press” or “This Week” interviews on Sunday.

As of Sunday, Clinton had accumulated 2,784 delegates, including superdelegates, more than 400 needed to clinch the nomination, according to the latest Associated Press tally, which put Sanders’s’ total at 1,877.

To have a shot at wresting the nomination from Clinton, Sanders would need to flip the allegiances at least 400 of the 581 superdelegates who have announced their support for Clinton — about 70 percent of them.

Sanders was scheduled to gather Sunday night with leading supporters in Burlington, Vermont, to discuss his future.