Jay,
Not sure if you mean vaccines in stage 3 trials or totally approved for the overall population.
If you mean totally approved vaccines....
With all due respect I am going to go out on a limb and say there aren't going to be any vaccines approved before the election, unless of course you live in Russia.
And I find it very hard to believe that a vaccine will be introduced that will kill up to 20% of takers. Imagine what tailspin this country would go into if that were to happen. No one would take any vaccine ever and the future of this country would start to look extremely dark. Do the early vaccines have a great chance of not working well, maybe making some sick and maybe even a few will die? Absolutely! But to introduce something that could kill up to 20%, I do not see that happening in this country. If it does, then the US has truly hit its peak and now falling hard into something I am not sure Iany of us want to see.