Demographic Change and the Future of the Parties
Here is a study by Prof Gimpel, Univeristy of Maryland, on the impact of immigration on electoral politics. As long as we continue to bring in 1.2 million legal immigrants a year, 87% of whom are minorities as classified by the USG, the demographics of this country will continue to rapidily change. We are no longer the same country we were when the 1965 Immigration Act was passed.
Immigration, Political Realignment, and the Demise of Republican Political Prospects
In counties of at least 50,000, where the immigrant share increased by at least two percentage points from 1980 to 2008, 62 percent saw a decline in the Republican percentage. In counties with at least a four percentage-point increase, 74 percent saw a decline in the GOP vote. In counties with at least a six percentage-point gain in the immigrant share, 83 percent saw a decline in the GOP vote share.
Beware assuming trends will continue forever. The dem party survives by providing goodies. This ability ends eventually, as the California bankrupt cities demonstrate.