Ep 1 has most of the votes. Plinkett made some good points in his ep 1 review:
* Palpatine's whole plan seems to be to scare the people of Naboo and the Senate into initiating a vote of no confidence in that other dude so that Palpatine can assume power in his place. In that case, then wouldn't it make more sense for him to have his people tell the Jedi "Nah, we ain't negotiating nothin'
Now run and tell that."
Then the Jedi telling them the news would create fear and would have accomplished a lot more than if he had just murked both of the Jedi on the spot.
And after that the senate decides that an independent team needs to go verify those claims that the invasion is really happening. Is the Jedi's testimony not good enough? You trust them to settle interstellar trade disuptes, but don't believe them when they say an invasion is coming