Ted Cruz could get a boost from the Virginia delegation if the convention goes to second ballot.
Bernie Sanders wore his usual suit to the swanky event.
Cruz focused on the water crisis in California at the state's GOP convention.
Elizabeth Warren slammed Trump's attacks on Hillary Clinton.
Pete Wilson announced his "wholehearted" support for Cruz.
Jonathan Swan and Julian Hattem 04/30/16 04:01 PM EDT
Despite outreach efforts by the Trump campaign, foreign policy experts are wary of embracing him...
Kasich said he is the only GOP candidate that can take on Clinton.
Marlin Stutzman has been under scrutiny for his campaign spending.
Massive protests disrupted Trump events this week.
Pete Wilson is set to endorse Cruz at the state's GOP convention Saturday.