If it was a secret ballot Trump would already be impeached. Repubs know how bad he is, just complete cowards.
$.02
IMHO the only thing Republicans think he's bad on are things Democrats think he's good on. Being a non-neocon social libertine. You think Cheney would have raided the DoD for money to defend the country aka build wall? F--k no. You think any of them other than Rand Paul were willing to say the entire post-HW neocon PNAC mindset was lolfail? F--k no. Any other Republican probably would have been politically competent enough to shepherd repeal of the ACA along and you'd still have the deficit and Justices Ishmail and Isaac.
Republicans don't give half a f--k about investigating Biden's kid. You think the people who gave you no-bid contracts to Halliburton care about some bottle service at Turnberry? Or jerking off Saudi Arabia for loot? That was old hat back when Dubya was DUIing. Like there was no deal with the Iranians to release the hostages in exchange for weapons.
Please.
IMHO I think they think Trump sucks at this, and they just can't get the dotard to hold their beers long enough to make some real ass money, for all the GOP and not just the Trumpany, up in this bitch, and they sure as hell can't pull off what Trump pulls off with the base without coming across like a cheap televangelist.
Who are you picking out of a pool of Republicans who isn't hilariously worse from a liberal point of view. Bill Weld? Christine Todd Whitman? Some other Northeast/New England Republican who was getting called a RINO 25 years ago?