President Joe Biden’s presidential debate performance, which many said was disastrous due to his mental errors and inability to dispel age-related concerns, immediately had Democrats speculating on whether he should be replaced as the Democratic presidential nominee.

While Biden has enough delegates to be named the Democratic nominee at the Democratic National Convention, the Democrats could opt for an “open convention” in which delegates vote for their nominee choice. If that happens, barring something else drastic, here are some of their choices.