Former President Donald Trump called for Wyoming to change its election law on Thursday to block non-Republicans from voting in Rep. Liz Cheney’s upcoming high-stakes GOP primary fight. Possibly realizing that thousands of Democrats and independents may cross the aisle to back his arch-nemesis, Trump urged Wyoming lawmakers to change the rules as the politicking starts in earnest ahead of the August primary. “It makes total sense that only Democrats vote in the Democrat primary and only Republicans vote in the Republican primary,” Trump wrote in an email message. Trump is backing a bill making…