Tim Pool has theorized that Tara Reade's allegations against Joe Biden could be good news for the DNC; it provides an excuse for them to ditch Biden and run someone else in the general election. Has this ever been successful? Has a party ever ignored their primary results (during the period where they employed primaries and caucuses) and nominated someone else who went on to win in the general election?
I'm interested in any situation in which the states' votes are ignored. Whether that is because the delegates are faithless or if the convention vote is ignored.