Answer:
Danville is a city located on the outskirts of San Francisco, east of Oakland, in California. It is one of the richest suburbs in the nation, with a median income of more than $ 50,000 per year.
This city has experienced a notable demographic increase, motivated especially by a relocation of the white population from San Francisco and Oakland to this small suburban city. Thus, the demographic change of these people, with high purchasing power and generally employees of large companies in the Bay Area, has caused the power relations and the cultural landscape of the city to change notably. Thus, until 2004, the population was more heterogeneous and middle class, which gave a higher percentage of votes to the Republican Party. But as of that year and with the relocation of university professionals and liberals, the Democratic Party has been the one that has won both local and national elections.