One word: “Staffers”.
You can get rid of any Rep or Senator you want; you can get rid of ALL of them. It still won’t make a difference. To make any meaningful change in Washington, you gotta get rid of the staffers. They are the ones that actually write the laws and advise the Congresscritter how to vote on specific bills.
"The penalty good men pay for indifference to public affairs is to be ruled by evil men."