San Antonio Mayor Julian Castro delivers the keynote address at the Democratic National Committee in Charlotte, N.C. on Sept. 4, 2012. The mayor predicted Sunday that Texas would soon go "purple" and then become a blue state. (Getty Images)
San Antonio Mayor Julian Castro (D) on Sunday predicted that red state juggernaut Texas will soon go "purple" and then finally blue.
"In a couple of presidential cycles, you'll be on election night, you'll be announcing we're calling the 38 electoral votes of Texas for the Democratic nominee for president," Castro told CBS News' Bob Schieffer on "Face the Nation."
Castro continued,"It's changing. It's going to become a purple state and then a blue state, because of the demographics, because of the population growth of folks from outside of Texas, and because, unfortunately, the Republican Party has gone so far to the right that they're losing the business community. They're losing the middle."
Castro delivered the keynote address at the Democratic National Convention in September and appeared on the show Sunday with his twin brother, newly-elected Rep. Joaquin Castro (D-Texas).
Joaquin Castro agreed, though added that it's "not going to happen on its own."
"The demographics are changing, but it's going to take a lot of work from Democrats to lay the infrastructure for change. So we're very busy working on that now," he said.