Despite an avowed refusal to take a Covid vaccine approved by the Trump administration being a Biden campaign talking point repeated by both people on the ticket, Democrats are considerably less skeptical of it than Republicans are:
Non-black Democrats, anyway. Given the black propensity to believe the US government has explicitly targeted them in a host of horrible ways, that result is not particularly surprising. Never mind, though, Biden wants to shove them to the front of the line, just behind first responders:
Positioning himself as the vaccine guy may not help Trump much electorally. Positioning himself as the reopening guy might, though. It’s frequently said on both the dissident right and the progressive left that the largest bloc of American voters are people who don’t vote. Pitching himself as the person who will reopen the country so people can go back to living their lives again is a plausible, non-ideological way to reach that bloc. Polling suggests the reopeners are in the minority but their numbers are growing and in retrospect I suspect they are going to be vindicated as the ones who got it right.