See 2020 election.
I said "They have to try to appeal to people in Michigan, Wisconsin, Pennsylvania, Georgia, Arizona, and Nevada. That's it."
No other state was close. *maybe* North Carolina if we are being charitable.
The only reason candidates come to California or New York is to raise funds from super wealthy donors. Happens here all the time "Today's ride through Portola Valley is moved from 10 AM to 8 AM due to (Trump/Biden/Harris) fundraiser somewhere on Los Trancos, roads will be shut down in the area from 11-2".
There *are* say, Trump field offices with a skeleton staff in places like Bakersfield, but they exist solely to try to get a bit of fundraising, sell swag, etc... Jobu himself says "his vote doesn't matter" - if you are in Bakersfield, which is a red district (Kevin McCarthy was the congressman) - it really doesn't matter if you vote. But if we had a National Popular Vote, maybe Trump holds a rally in Bakersfield because they expect they can win 70/30 there, and they want to juice turnout, because those votes are thrown into the big soup.