I believe. The Jedi help him create his clone army, the Jedi help him fight a war that destroys much of the galaxy that would be able to combat his Empire.
Was Padme arrogant? She did circumvent the political process, and instead of allowing the Jedi to suggest remedies to the problem on her planet, she usarped the sitting Chancellor and allowed Palaptine to take control for her own greedy purposes. To an extent, I believe she was arrogant. But her blindness to the truth was not from arrogance, it was being naive.