A Trump vs. Biden rematch seems inevitable at this juncture, barring one of their deaths or the off chance that one of them goes to prison. Of course, considering the president’s and former president’s ages, Joe Biden’s well-documented mental decline, and both front-runners’ (earned or unearned) legal troubles, a curveball is not out of the realm of possibility. Voters tend to “come home” as general elections draw near, but both presumptive major party nominees are facing record-high negatives and a severe lack of enthusiasm from all but their most loyal bases of support.