I predict that the vote will succeed and the impeachment charge(s) will be sent to the senate where the vote will fail.
At this point, the left has to pass this in order to stop the internal bloodletting. Nancy is cornered and this is their only practical way forward, IMO.
I predict it will pass and the senate may seriously consider removing Trump to allow a less controversial Pence to try and ‘quiet’ things down. Pence will choose a new vp to keep Nancy away from the presidency. The senate may choose a “censure” motion instead.