Tim Walz agrees to vice-presidential debate against JD Vance on 1 October

Tim Walz, the Minnesota governor and Kamala Harris’s running mate, said he would be willing to debate JD Vance, Ohio senator and Donald Trump’s running mate, on 1 October.

Walz, in a post to Twitter/X, was responding to a CBS News statement that said it had invited both vice-presidential candidates to participate in a debate in New York City.

CBS said it had presented both campaigns with four dates as options: 17 September, 24 September, 1 October and 8 October.

“See you on October 1, JD,” Walz wrote.

A statement from the Harris campaign said: “Harris for President has accepted CBS’ invitation to a Vice Presidential Candidate Debate on October 1. Governor Walz looks forward to debating JD Vance – if he shows up.” Vance has not said whether he would accept the date.

Walz last week said he “can’t wait to debate the guy — that is, if he’s willing to get off the couch and show up”, in a reference to the baseless but much-shared claim that Vance admitted to having sex with a couch in his memoir.

In May, the Biden campaign said the vice-president – then Joe Biden’s running mate – would be willing to debate the eventual Republican vice-presidential nominee on either 23 July or 13 August.

Related: Harris and Trump agree to debate on ABC in September as race tightens

At the time, the president had not yet stepped aside from the race and endorsed Harris to succeed him as the Democratic candidate for president in this election, and JD Vance had not been announced as Trump’s running mate.

Vance’s campaign then declined to commit to a vice-presidential debate before the Democratic national convention on 19 August.

Harris and Trump have agreed to participate in their first debate on 10 September, hosted by ABC News.

The network said the debate will be moderated by David Muir, the World News Tonight anchor and managing editor, and Linsey Davis, the ABC News Live Prime anchor.