I get that part about Sidious being behind both sides of the conflict so he could declare himself absolute ruler. Why did Jar Jar give him emergency powers again? Also, Padme was maneuvered into making him Chancellor in the first place. When Bail Antilles probably would have won the election. Since Palpatine is the one who stirred up lies that Valorum was corrupt, but you can’t argue that he wasn’t ineffective as a chancellor. He was a friend to the JEDI, I guess that made it doubly useful to ruin him.
I assume Mas Amedda was working for him the whole time as well reporting on Valorum to Sidious.
Also, Padme isn’t weak minded, so she was manipulated without use of the force, but Jar Jar is weak minded so who knows.