And with primary elections across California and seven other states on Tuesday, the political battlefield will soon be set for the first midterm elections of Donald Trump's presidency. Mississippi Republican Senator Roger Wicker won his primary contest as did New Jersey Senator Bob Menendez, a Democrat who faced federal bribery charges last year. Recognizing the high stakes, Trump sought to energize his supporters in a series of tweets praising his preferred California Republican candidates. "In High Tax, High Crime California, be sure to get out and vote for Republican John Cox for Governor. It Mississippi, 66-year-old Gladys Cruz wasn't sure which Republican she would support in the state's Senate primary, but she wants whoever wins to firmly support Trump.