That's not accurate.
Democrats said they wouldn't trust a vaccine that the Trump admin rushed for political purposes. FDA and CDC were publicly saying "We're thinking this won't be ready until Winter." And we agreed that the process shouldn't be rushed, put it out when it's ready. Then, the right-wing started doing pre-gaslighting to form your toxic narrative: "Watch, soon as Biden is elected..."
Claim #1: Democrats will THEN support the vaccine after - false.
Claim #2: Biden's going to reopen everything - false.
Claim #3: Biden will impose mask mandates and won't lift them - false
Classic throwing spaghetti at the wall so that you can fulfill your own confirmation bias. We push the vaccine because it's safe. Because we could have nipped this thing in the bud months ago. But because it's being allowed to survive through Republicans, it's being given time to mutate. Republicans are the slackers who didn't do their part on a group project. (literally)
Here's excerpts which highlight what I am talking about. Consider yourself informed:
AUGUST 6, 2020 - Reuters
"Democrats in the House of Representatives on Thursday introduced legislation that would require the FDA to consult with a panel of experts to ensure a vaccine doesn’t get rammed through too fast. The panel, the Vaccines and Related Biological Products Advisory Committee, is made up of experts from academia, industry and government."
https://www.reuters.com/article/us-health-coronavirus-trump-vaccine/trump-says-coronavirus-vaccine-possible-before-nov-3-idUSKCN25221Q
JULY 27, 2020 - Associated Press
"The political imperative for Trump has sparked concerns among members of Congress that Trump could try to take shortcuts in the approval process. Administration experts have dismissed those concerns, and Food and Drug Administration Commissioner Dr. Stephen Hahn said Monday, “We must maintain confidence of the American people in the scientific process.”
https://apnews.com/article/virus-outbreak-election-2020-ap-top-news-north-carolina-florida-7cc45cdcb3e53515b8ff4304a4ae5c06