eh?
Can we get some clues.
Is this one ?
The story is simple enough, really. After a senator (from an unnamed state) dies, the governor must pick his replacement. Wavering between selecting the candidate supported by a corrupt media mogul and the one chosen by some populist committees, Governor Happy Hopper instead ponders the advice of his sons, who suggest Jefferson Smith (Stewart), the head of the Boy Rangers and an all-around wholesome fellow. Ultimately, the governor flips a coin to decide between the mogul's candidate and the committee candidate, but it lands on its side – right next to a newspaper featuring a story on Smith. Seeing this as some kind of sign, Governor Hopper chooses Smith, and is able to sell him to the shady mogul Jim Taylor as someone who'd be easy to manipulate in Washington, D.C.
To that end, Smith's sponsor in the Senate is the other senator from their state, Joseph Paine (Claude Rains). Paine had been friends with Smith's father all the way up to his death, and speaks to the naïve young man about how impressed he was that the senior Smith took on the most difficult and impossible causes. His words belie his true intentions, though. Paine is beholden to Taylor for his own position as well as any future political aspirations, which include a run to the White House.
Jeff's genuineness and integrity only become a problem for Taylor, Paine and their ilk when the Boy Rangers leader drafts a bill for the creation of a boys' camp in his home state. The problem is, the proposed location for this campsite happens to be in the same spot that is part of a dam that is to be built as a part of a Public Works bill designed specifically to provide graft to Taylor and his cronies. Naturally, they have to find a way to discredit the person who would oppose them, which provides the source of the movie's conflict.