>the Republican Party picking her regardless of her poll results in the primary
That would be the death of the Republican Party. Trump would run as an independent, and Crush her yet again. If they think that doing that would split the vote enough to give Biden the win, they're mistaken. Many registered republicans are supporting Trump, and would be pissed at them for pulling such a stunt, and go all-in for Trump.
On top of that Biden continues to lose more of the Black vote, especially with Snoop and 50cent supporting him.
I don't think the GOP would be dumb enough to do that, although you never know. Let's wait and see what happens.