WASHINGTON — US Senator 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,’’ the Vermont senator 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 said
Sanders said 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.’’
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 US Senator Elizabeth Warren of a Massachusetts 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.
‘‘Meet the Press’’ and ‘‘This Week’’ were two of four morning talk shows on which Sanders appeared Sunday.
The interviews were his first since Sanders met with President Obama on Thursday, the same day that Obama, Vice President Joe Biden, and Warren endorsed Clinton.
Sanders 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 have announced their support for Clinton, the party’s presumptive nominee.
As of Sunday, Clinton had accumulated 2,784 delegates, including superdelegates, exceeding the amount needed to clinch the nomination by more than 400, 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.
The Clinton campaign this week will begin airing its first television ad of the general election.
Clinton’s campaign said the ad will air in battleground states beginning on Thursday. The campaign did not initially release information about the size and cost of the television buy.
The ad is an attack on Donald Trump as temperamentally unfit to lead the country, using the Republican’s words to cast him as insensitive and callous.
The ad sets up a comparison between Clinton’s qualifications and what she suggests is Trump’s default to bombast and ridicule.
It will follow a speech Clinton plans in Ohio on Monday that will attempt to frame the election as a stark choice about reason and values. That comparison, visible in Clinton’s address earlier this month picking apart Trump’s foreign policy views and credentials, is emerging as the crux of her general election strategy.
The ad, titled ‘‘Who We Are,’’ is narrated by Clinton. It includes clips of Trump at campaign events talking about beating up people and mocking a reporter’s disability.
‘‘Today, we face a choice about who we are as a nation,’’ Clinton begins.
The ad then cuts to Trump at a podium saying, ‘‘I'd like to punch him in the face.’’
Clinton asks, ‘‘do we help each other? Do we respect each other?’’ as the ad cuts to Trump disparaging and belittling people.
‘‘I know what I believe. It’s wrong to pit people against each other,’’ Clinton says in the ad. ‘‘What kind of America do we want to be? Dangerously divided, or strong and united? I believe we are always stronger together.’’