Yes ballotpedia is good, but I still wish it had more information about local (city, county) governments as well as judges. These ones are the hardest and most time consuming to research.
I also used https://www.ballotready.org/ it helps with some candidates, but looks like ballotpedia most of the time still has more info.
Will try to find mine.
Honestly though I think that judges should be appointed by governor, maybe approved by legislature and during election we should have option to repeal them if they do something outrageous.