What could Democrats have done differently about Graham Platner?

Democratic senators previously questioned Graham Platner regarding his personal history and potential sexual assault allegations, which he claimed were not credible. However, following a Politico report, Maine Democrats are now plotting a process to replace him. Party leaders aim for an open, transparent, and fair selection method for all candidates. Discussions indicate that a replacement for the Senate campaign may be chosen during a statewide convention to ensure the integrity of the party's nomination process.