I think national issues play into gubernatorial races less than obviously in Senate and Congressional races. Much less. They tend to be more decided by personality leadership qualities and by state or local issues. They still have some effect no question about it but not as much as Senate and Congressional races.
Flying back from New York the flight attendant said 'God I wished you were here yesterday we had a stroke on the plane. I said if I have a stroke on a plane I hope the pretend doctor isn't the one on the plane. I want a real doctor.