WASHINGTON (AP) — Even before President Joe Biden’s withdrawal from the 2024 presidential race, allies of former President Donald Trump floated the possibility of suing to block Democrats from having anyone other than Biden on the ballot in November. But election administration experts say the timing of Biden’s exit makes it unlikely that any Republican ballot access challenges will succeed, with some calling the idea “ridiculous” and “frivolous.” Democrats are on safe legal ground as they identify a new standard-bearer, they say, because the party hasn’t officially chosen its nominee. That typically occurs when delegates vote at the party’s convention. The Democratic National Convention begins Aug. 19.