I BELIEVE NO GOPer HAS TURNED ON HIM BECAUSE THEY KNOW HE IS NOT NOR DOES HE OPERATE LIKE A TRADITIONAL POLITICIAN. HE HAS AND ACTS MORE LIKE A MOB BOSS WHO WILL EXACT RETRIBUTION WHEN CROSSED. HOWEVER, I BELIEVE THE DAY IS COMING VERY SOON THAT THEY WILL SEE THE "EMPEROR HAS NO CLOTHES" AND WILL TURN ON HIM LIKE A PACK OF SHARKS ON ONE OF THEIR OWN, WHO IS ACCIDENTLY WOUNDED AND BLEEDING.
TRUMP HAS BEEN WOUNDED BY THE IMPEACHMENT ACTIONS AND THE GOPers ARE SIMPLY WATCHING TO SEE THE EXTENT OF THAT WOUNDING.
GOP support is as high as ever, not sure how you arrive at that. If our elections were based on majority vote then yes I agree. The Electoral College makes things dicey and no elected republicans are jumping ship. Not running does nothing as several have done.
The solution seems easy to me, the Senate needs to grow a pair and convict him. There will be outrage, but they can present the evidence in a manner their constituents will understand and believe. Of course not all will, the neo-Nazi's and similar, but reasonable people will get it.