Over 150 million people voted in the last election. It isn't that hard for the Republicans to find a few good people out of them. This is the power of large numbers.
(I don't believe this is quite the same thing as the law of large numbers.)
You say that but across the country state GOP’s are going bankrupt from Michigan to Colorado. The whole party is basically the Trump Legal Defense Fund
That's not quite the same issue, but yes, there are very weak state Republican Parties just as there are very weak state Democratic Parties like in Florida. If you point out that Michigan is a competitive state, I'd point out that probably the second weakest state Democratic Party is in New York.