Republicans are preparing for a political “bloodbath” as tensions mount among former President Donald Trump’s top advisers over an upcoming senatorial primary, according to a new report. The predicted Montana contest between Rep. Matt Rosendale and former Navy SEAL Tim Sheehy — both of whom want the chance to try and unseat Democratic Sen. Jon Tester — has tempers rising among the Trump team, NBC reported Tuesday. “Obviously there’s this bloodbath that’s about to play out,” a strategist close to Trump’s team told NBC. “Rosendale has a clear Trump world problem that may reach to the highest lev…