Julian Castro is running for President.
He was Secretary of Housing and Urban Development from 2014 to 2017.
He was also Mayor of San Antonio from 2009 to 2014.
According to Business Insider, 34% of likely Democratic primary voters have heard of Castro.
11% think he can beat Trump.
41% think Castro would lose to Donald Trump.
Castro voters would also be satisfied if Kamala Harris is the nominee.
Castro is an ardent supporter of the "Medicare for all" proposal.
