MILWAUKEE — Weeks after President Joe Biden and former President Donald Trump‘s debate upended the incumbent’s 2024 campaign, their vice presidential nominees are now negotiating the terms of their own debate.

Vice President Kamala Harris and Sen. J.D. Vance (R-OH), who will accept the Republican Party’s vice presidential nomination at the GOP convention Wednesday in Milwaukee, spoke on the phone this week after Trump announced the senator as his running mate. Although readouts of their discussion described their conversation as cordial, the principals and their aides have yet to agree on a debate date.