The majority of the GOP seems ready to throw Trump under the bus and embrace Biden.
Not according to WaPo - evidently almost none of them believe Biden has won:
https://www.washingtonpost.com/graphics/2020/politics/congress-republicans-trump-election-claims/
According to direct polls 220 out of 245 refuse to call Joe President Elect.
That is not a majority in non common core math. You Lie.
If you mean the professional politicians and GOP elites and crony capitalists, yeah. But I think Trump still has a huge populist Tea Party type of voter base that greatly overlaps with the Republican voter base that will remain loyal to him because he remained loyal to us. Trump always has been more populist and less elite than the Republican establishment types. And I think he may be more popular among Republican voters than the Republican party is.