Former San Antonio Mayor Julian Castro formally announced his bid for the Democratic 2020 presidential nomination on Saturday, telling a crowd in San Antonio that he is running for president.
Sen. Elizabeth Warren, D-Mass., announced last week that she has formed an exploratory committee, and visited Iowa last week.
On Friday Rep. Tulsi Gabbard, D-Hawaii, announced that she is running.
Republicans immediately dismissed Castro's bid as a "desperate attempt" to become someone else's VP pick.
This is obviously just another desperate attempt to become someone else’s running mate.”