The night before Julián Castro delivered the keynote address at the 2012 Democratic National Convention for President Barack Obama’s re-election, he had eaten by himself at the T.G.I. Friday’s not far from the Time Warner Cable Arena in Charlotte, N.C.
No one recognized the 37-year-old mayor of San Antonio. As the other delegates party-hopped around Charlotte, Mr. Castro studied his notes over dinner and went to bed by 9 p.m. He wanted to be well-rested before giving the biggest speech of his political career — a speech that he and his family now remember as transforming everything.
“The next morning, when we walked down the street, he was just mobbed,” said Mr. Castro’s twin brother, Joaquin, who is a United States congressman. “It was this instantaneous example of how things can change so quickly.”
Mr. Castro’s speech, in a prime-time slot, burst him onto the national stage, just like the one that had catapulted Mr. Obama to superstardom in 2004. Mr. Castro symbolized a new moment in American politics: The grandson of a Mexican immigrant with a fourth-grade education, the young mayor talked about his family’s story, one so common for millions of Latinos and yet almost nonexistent at the highest level of national politics. “My family’s story isn’t special,” Mr. Castro said. “What’s special is the America that makes our story possible.”
The applause was raucous. The reviews were overwhelmingly glowing (“A Political Star is Born” and “A Latino Obama?” the headlines read). People started to recognize Mr. Castro, even if they often confused him for Joaquin. On the way back to San Antonio, a fan stopped him in a men’s room at the Atlanta airport to shake his hand. (“He wanted to shake my hand in a men’s room!” Mr. Castro said. “I couldn’t believe it.”) Political pundits declared the Castro brothers the future of the party.
“He was this kind of phenom and, you know, was this symbol of the growing diverse country,” David Axelrod, Mr. Obama’s chief strategist, said of Julián.
Party leaders waited for him to seize on his “Obama Moment.” And waited. And waited. And waited.
The keynote, as it turned out, became a turning point that didn’t quite turn him.