Let's say trump gets removed from office in February. Mike pence then comes out and says "i don't really want this job" and just resigns. Now we have President Pelosi. So what does the DNC do in their primaries? They've got a sitting president that took out the #1 opposition opponent. Does bernie, warren, biden, etc bow out and the party coalesces around president Pelosi or do they fight it out at the convention?