Follow the Money is Open Secrets for state-level politics. An extremely useful lobbying tool for anyone at the state level, it tracks every industry contribution to both incumbents and their challengers for any state-level office.
Open Secrets tracks the finances behind your federal representative’s campaigns. Open Secrets’ comprehensive database can let you know who is your weakest representative, and who is the strongest, as well as make it easy to call out recipients of dark money, and can be a strong addition to any lobbying strategy.
Congress.gov provides access to bill searches, active legislation, Senate and House Activities, Committees and their members and more.
The Pennsylvania PTA has a great guide to creating a resolution, the cornerstone of effective local government. Particularly useful are the various legalese terms given to help you formulate the Whereas and Be It Resolved clauses.
The OpenStates project gives you access to a database with state-level bills and legislators. You can search bills by text content and you can search for contact information for a specific lawmaker. You can also find information on their previous votes. The database is incomplete, so don’t bet your life on it, but still incredibly useful for lobbying at a state level.