First time considering CTV for issue advocacy

What are organizations here using for paid digital beyond Facebook for issue advocacy campaigns? We're working on a state-level ballot initiative and need to reach voters in specific legislative districts without blowing the budget on broad geo. Someone on the team suggested looking at programmatic and CTV vendors that have political experience. Q1 media has come up a few times in that context. But we've never run CTV before and I'm nervous about the creative requirements. Is a 30-second spot actually necessary or can you make 15s work for issue messaging?