The process that saw the rise of Senator Palpatine to Emperor cannot really be compared to anything you might have seen in any western democracy any time recently. It's more the sort of thing that you saw give rise to the Kim dynasty in North Korea but even that, I can't think of anything comparable.
1) Senator Palpatine becomes Chancellor by capitalizing on Trade Federation's aggression on his home planet
2) Chancellor Palpatine invokes extraordinary powers to take action against separatists, to fight a war. He commissions a grand army for the republic, a federal army so to speak, as opposed to each system (state) having its own security apparatus. The senate approves because it's war and everything. The twist though, is he is the one behind the separatist uprising. He's controlling both sides. So maybe if you buy in to the idea that 911 was an inside job, that would be comparable with Bush Cheney and Rumsfeld doing away with the niceties of civil rights and all.
3) The Jedi discover that Palpatine is a Sith Lord and attempt to assassinate him. After easily killing the 4 jedi who come for him, he rallies the senate to turn the army against the Jedi and eradicate them. That's a pretty rational response if you think about it, from the senate and the population's point of view, they don't know what a Sith Lord is. The Jedi are an eccentric cult that bullies and intimidates its opponents.
4) Senator Jar Jar Binks takes part in the vote to give Palpatine imperial powers and Palpatine eventually disbands the senate