Former Maine Senate President Troy Jackson, a Democrat, files an exploratory committee with the Federal Election Commission as a potential replacement for U.S. Senate candidate Graham Platner in Maine. The filing comes as Jackson joins calls from others urging Platner to step aside following a new sexual-assault allegation. According to reports, Jackson’s campaign activity includes the official paperwork required for an exploratory committee, which signals he may seek the Democratic nomination to appear on the ballot if Platner withdraws or is otherwise unable to continue. One outlet reports that Jackson faces pressure to act amid the allegations, while another outlet describes Jackson’s public statements urging Platner to drop out of the race. Both accounts characterize Jackson’s move as part of the ongoing political response to the allegation and uncertainty about Platner’s candidacy. The sources do not indicate that Jackson has been formally nominated or that any replacement process has been finalized, only that he has taken a step to position himself as a potential alternative on the ballot.