The Democrats political need to avenge on Trump precluded all possibility of a building a more robust and bipartisan case against Trump.
Future Democrat impeachment efforts against Trump will be widely dismissed as crying wolf.
Best outcome for the Democrats would be for them to vote it down tonight, reserving for themselves the right to bring it up again in the future.
There’s no need to rush it through when judicial review of the President’s claims haven’t even been exhausted yet.
No good reason has been advanced by the Democrats to impeach Trump tonight.
If they insist on going ahead with it, history will not judge them kindly.
Everything is political
Dems claim Trump is a danger for democracy
Impeachment taints Trump for 2020
Then the Dem focus on taking the Senate
The whole problem with that strategy is that Trump has done nothing extraconstitutional, so trying to build a bipartisan evidence based case is truly a Sisyphean task. So the DemocRATs are moving forward with what they have. As the song says, "Nothin' from nothin' leaves nothin'."