I love how Trump was never afraid to go into lion dens. He campaigned _everywhere._ Even in states he _knew_ he would lose. Just to keep spirits up and project the well-earned winning attitude. That, I think really encouraged folks in swing states. He exuded the confidence of being 10 points up and campaigned like he was 10 points down. He took nothing for granted.
Contrast with McCain, who wouldn’t go to Michigan because he thought a waste of time, money, and effort. So much so, that he wouldn’t let his best asset, Sarah Palin, go there on her own to give Michaganders hope and the will to fight.
This is how he won the popular vote. He didn't care. He knew he'd never win NY. But he also knew there were millions in NYC who would vote for him.
Flipping the popular vote might have been Trump's greatest accomplishment this election. A GOP presidential candidate hasn't won the pointless (but massively bragworthy) national popular vote since 2004. And only twice since 1988.
I think it was excellent that he came to California. Some posters here scoffed at the idea. California is a big red state with moldy blue edges.