WASHINGTON — Erik Prince, the founder of the security contractor Blackwater, is seriously considering a Republican primary challenge for a Senate seat in Wyoming, potentially adding a high-profile contender to a fledgling drive to oust establishment lawmakers with insurgents in the mold of President Trump.
Mr. Prince appears increasingly likely to challenge John Barrasso, a senior member of the Senate Republican leadership, according to people who have spoken to him in recent days. He has been urged to run next year by Stephen K. Bannon, who is leading the effort to shake up the Republican leadership with financial backing from the New York hedge fund billionaire Robert Mercer and his daughter Rebekah.