Bruce Blakeman, the Republican county executive of Nassau County in New York, announced Tuesday that he will run for governor of the Empire State.

Nassau County Executive Bruce Blakeman, a firebrand Long Island Republican, announced a run for governor of New York on Tuesday, setting up a primary clash with fellow Trump ally U.S. Rep. Elise Stefa...

While Trump’s endorsement would be key to winning the Republican primary, aligning with the president — who is widely unpopular in deep-blue New York — could hamstring Blakeman or Stefanik in a genera...