I imagine in terms of medical care access and affordability or welfare stimulus, practically negligible, but in terms of CDC funding, science literacy, public policy, and general preparedness, it would be a whole lot better put together.
So I'd say... 10% fewer deaths? 200K vs. 220K deaths sounds about right.
Under Trump they marched into a statehouse armed and have a whole cottage industry of covid conspiracy theories. It's hard to imagine them being more opposed to any sort of covid precautions.