https://motherboard.vice.com/en_us/article/d344qy/net-neutrality-2018-elections

If you care about preserving net neutrality, the most important thing you could possibly do would be to run for political office on a platform that promises to protect the free and open internet and to roll back regulatory capture by big telecom.

Failing that, the second most important thing you could possibly do would be to support and vote for a political candidate who pledges to protect the internet.