Before joining Hilary Clinton's campaign, she ran and lost the election for California's 21st Congressional District in 2014. Renteria, a former aide to Sens. Dianne Feinstein and Debbie Stabenow, gained prominence in political circles as national political director of Clinton’s 2016 campaign. But Renteria is not widely known in California, and her last bid for elected office, in a House contest in 2014, ended in bruising defeat. Rep. David Valadao that year trounced Renteria by more than 15 percentage points in her effort to dislodge the Republican from his Central Valley seat. Democrats familiar with Renteria said she could be seeking to build name recognition for a future, more credible, run for statewide office. A top aide to state Attorney General Xavier Becerra, Renteria immediately became unreachable. Renteria drew support from prominent Democrats in her 2014 House run, including EMILY’s List and the Latino Victory Project. Then-Vice President Joe Biden campaigned alongside her.