As someone who hasn't really paid attention to the whole Trump-Russia thing mainly because I believed he would weasel his way out. This shyt looks serious brehs. If someone more in the know would give me a percentage chance they think he'll get impeach drop that shyt for me.
It depends on how 2018 goes.
I don't think Republicans will impeach him no matter what because, well, they're Republicans. If the Dems retake the house they might. There's also a chance that he resigns before they get a chance to impeach. My odds are
20% - Dems retake the House and impeach
20% - Dems take the House but don't impeach (because they're puzzy)
35% - Republicans keep the House and they don't impeach and pretend nothing is wrong
25% - It gets bad enough that Trump just steps down before midterms
5% - Republicans impeach Trump