I disagree. Plenty of republicans are vociferously disagreeing with Trump over Iran and Epstein. But even if your premise is true, what if the two-party system were constructed or manipulated by a foreign government with the express intent on dividing us? Maybe that should be addressed as well?
And the military. Who the majority of soldiers supports matters a lot since they have the final say when leaders cannot agree. Trump does a lot to gain favor with the military, democrats doesn't do much for them.