To sound like George Carlin, we get the politicians that we deserve. Most if not all of us have voted for someone who has been elected to public office. And for those of us who haven't who you might be able to set up a small club and hold your meetings in a bathroom. Those people probably don't bother to vote. Or vote for losers, or vote for good people in a jurisdiction that has a lot of idiots or crooks. So if you voted for a crook even an oil slick crook, whose fault is that? The crook who knows they are a crook and is just doing what they normally do until they're caught? Or the good person who should know better than to vote for crooks and let their dog eat their homework before they voted?
I at least would argue that voters are always responsible for who they voted for. For anyone who voted for George W. Bush twice for president and now sees him as the worst president in their lifetime, they only have themselves to blame. For anyone who voted for Barack Obama twice for president and now see him as some weak moderate, or even worst. You had opportunities to vote for Dennis Kucinich and Jill Stein in both elections and instead went with the establishment Democrat. Crooked politicians (as if they're any other politicians) don't get reelected over and over because they have guns to all of their constituents heads. They're not Saddam Hussein, or some Marxist who says, 'Vote for me, or go to jail, or even die.'
Crooked politicians, stay in power by buying off their constituents and and taking a hell of a lot of money from groups that don't have the politician's constituents interests at heart and many times what they're protecting goes against their constituents interests. But the crooked politician always has to run for reelection to stay in power. And if they have a smart educated constituency they risk losing. Because someone steps up and says, 'I can beat this bastard and get the support to do it.' And the crook can get voted out. But as long as voters still use, 'the dog ate my homework' excuse and don't bother to do their homework before they decide who to vote for, crooks will continue to get elected and reelected and not be held accountable for their crookedness.