i'm kinda jaded because it seems the type of people that get into politics do it to gain money and power.. so voting always feels like picking the lesser of two evils
Start by just attending a some meetings of your local school board, city council, etc. Sit, watch, and maybe take notes. Compare the reality with local press coverage (if any) of it. Try analyzing the social dynamics. Talk to other ordinary citizens about it.
If the only people paying real attention to gov't leaders are the greedy and power-hungry, then few decent people will run for office. And very few of those win.