None of it matters, these people knew they were going to vote for impeachment even before they knew what it was about. This is the world we live in today. It was an impeachment vote looking for somewhere to hang its hat. Can they get all Dems? I doubt it. Can they get enough? Probably -- we will have to wait and see what the 31 Dems who won districts Trump carried have to say for themselves. Will they continue to vote how Nancy demands they vote even if it means the end of their political career? We will see.
Even if so, and I dont know if you saw what I posted above about what Will Hurd signaled, but he is as wobbly as any Republican. If House Dems cannot bring Hurd over to the darkside, then they have zero chance of getting 20 Republican Senators.