Politician Parade adds a state's Congress reps to your Twitter search. Specify a query and a state, and Politician Parade will create a Twitter search limited to the Twitter accounts of that state's House of Representatives members.
Because some states have lots of reps (California, Florida, Texas), they require multiple search queries. The generated queries appear underneath the "Parade them Politicians!" button.
You'll need an API Key to use this tool. You can get them free from https://www.propublica.org/datastore/api/propublica-congress-api .