Scott Bland | September 4, 2012
It's a given that San Antonio Mayor Julian Castro, tapped by President Obama for the same Democratic National Convention keynote slot that rocketed him to prominence in 2004, will command attention Tuesday (and likely many days after). But don't forget about the man who comes before him tonight: Twin brother Joaquin Castro, the Democratic nominee in Texas's 20th Congressional District, is in line to make a faster impact on Washington, D.C. The House Democratic caucus badly needs young stars, and the younger Castro brother -- by about a minute -- has all the tools to become one.