>

The most important characters in Star Wars are obviously the "droids". 
They are also the only repeat characters (c3po and r2d2) in all the movies.
Also although Jar Jar Binks "brings it up" he doesn't do what Queen Amadala does which literally votes "for no confidence" which is a far more striking change and really was the impetus to all of Star Wars.
Finally you can't really blame the Queen let alone Jar Jar. Palpatine was literally mind fucking everyone including master fucking Yoda. How 1000s of Jedis could not detect Palpatine when he was next door mind fucking the other senators is beyond me unless... unless.. Palpatine is truly that strong (and he is)... so yeah there was no hope for simple Jar Jar Binks.
The one who really fucked up is Yoda.
Without Jar Jar Anakin would never have been put on the council, Order 66 would not have been executed, the entire Jedi Order would not have been destroyed, and neither Vader nor The Empire would have come to be.

Sith Lord Jar Jar confirmed >

But why did the character have to be a clumsy doofus? >

That I can't answer >

Now we are getting into the actual good shit >

I guess but no, not really. If it weren't him then somebody else would have done it. >

Would anyone have been easy enough to talk into doing as him? I don't think so. >

For the Emperor? Guy survived falling down a hundred mile shaft, rebuilt his empire, defeated four Jedis at once and overthrew a ten thousand year old republic. I don't think anybody would have been much of a challenge for him.