Wyoming has 585,000 people, and 3 electoral votes.
California has 39,250,000 people and 55 electoral votes.
In Wyoming, itsit's about 200,000 people per Electoral Vote.
In California, itsit's about 710,000 people per Electoral Vote.
If given the choice, would you rather work to win over 100,000 people, or 355,000 people to your cause?
On the other side, it is a lot easier to campaign in California: A well organized campaign can speak to many thousands of voters at once in dense areas.
In Wyoming, reaching voters requires long drives speaking to small groups in small towns.