That's why you hire the lobbyists. If you had an answer to that, you would be the one doing the lobbying.

There's always something more you can offer these folks. An extreme example would be offering them a billion dollars each to fix the elections and resign their positions. They'd probably take that deal. If you just offer them a dollar, they'd laugh you out of the room. Lobbying is the process of finding out where in the middle of those two options you can find a mutually acceptable deal.