Austin also sees social, racial and political divergence between the successful towns and the lagging ones. Declining Midwestern areas are often white enclaves, which were once destinations for white flight from inner cities; now, these counties often tend to have fewer immigrants, more stagnant economies and higher levels of support for the angry, nostalgia-tinged campaign of President Donald Trump. But more ethnically diverse regions have flourished economically, and these have tended to vote for the Democrats.