Wow, look what I just found. The official (verified) Oklahoma State Election Board's twitter account is Shadowbanned and Ghost banned.
I thought something was odd when my mentions had a reply to the Oklahoma Elections tweet I retweeted but their tweet was unavailable. I went back and the tweet is available, and it's about Kanye West qualifying for the General Election ballot in Oklahoma.
Scroll down to the bottom of the replies to this tweet and you can see the reply tagging me and the OKElections account is still there. https://twitter.com/OKelections/status/1283516745630781440
There is also a search ban for @okelections and they don't show up when you type in their name in a tweet. The autopopulate is turned off.
Ok now I'm really mad
https://twitter.com/Shem_Infinite/status/1283819607468498945

But wait, there's more! https://twitter.com/Shem_Infinite/status/1283831904475721730
Update: Someone found an example of a Democrat Committee being ghost banned while the GOP Committee isn't. https://twitter.com/ClenchedFisk/status/1283880647338217472
Update, JudiciaryGOP isn't locked out of their account anymore and they are no longer ghost banned. Jim Jordan is still locked out and still ghost banned. Looks like Twitter ghost banned accounts they locked out after the hack.
Thread with some theories about what maybe is going on: https://twitter.com/Shem_Infinite/status/1283940033142161412