Record numbers of wealthy Americans are making plans to leave US after election
cnbc.com
cnbc.com
The votes of all of the 1% are worth about one-hundredth as much as the votes of all the rest of us. They won't be missed. Except perhaps in one or two counties in a swing state.
The lack of their money sloshing into the political system, on the other hand, will very much have an impact.
As to leaving and making political contributions, i suspect in the worst case a US domicile company could make them.