Eight summers ago, a fresh faced politician took to the podium for a keynote address at the Democratic convention that launched him onto the national stage and a path to the White House.
Among the viewers of then Sen. Barack Obama's national debut was Julian Castro, now mayor of San Antonio, who will follow in Obama’s footsteps as keynote speaker at the Democratic convention this year in Charlotte.
In picking Castro, Democrats are acknowledging the power of the Latino vote in the 2012 race for t