<P> The governor of an unnamed western state, Hubert "Happy" Hopper (Guy Kibbee), has to pick a replacement for recently deceased U.S. Senator Sam Foley . His corrupt political boss, Jim Taylor (Edward Arnold), pressures Hopper to choose his handpicked stooge, while popular committees want a reformer, Henry Hill . The governor's children want him to select Jefferson Smith (James Stewart), the head of the Boy Rangers . Unable to make up his mind between Taylor's stooge and the reformer, Hopper decides to flip a coin . When it lands on edge--and next to a newspaper story on one of Smith's accomplishments--he chooses Smith, calculating that his wholesome image will please the people while his naïveté will make him easy to manipulate . </P> <P> Junior Senator Smith is taken under the wing of the publicly esteemed, but secretly crooked, Senator Joseph Paine (Claude Rains), who was Smith's late father's friend . Smith develops an immediate attraction to the senator's daughter, Susan (Astrid Allwyn). At Senator Paine's home, Smith has a conversation with Susan, fidgeting and bumbling, entranced by the young socialite. Smith's naïve and honest nature allows the unforgiving Washington press to take advantage of him, quickly tarnishing Smith's reputation with ridiculous front page pictures and headlines branding him a bumpkin . </P> <P> To keep Smith busy, Paine suggests he propose a bill . With the help of his secretary, Clarissa Saunders (Jean Arthur), who was the aide to Smith's predecessor and had been around Washington and politics for years, Smith comes up with a bill to authorize a federal government loan to buy some land in his home state for a national boys' camp, to be paid back by youngsters across America . Donations pour in immediately . However, the proposed campsite is already part of a dam - building graft scheme included in an appropriations bill framed by the Taylor political machine and supported by Senator Paine . </P> <P> Unwilling to crucify the worshipful Smith so that their graft plan will go through, Paine tells Taylor he wants out, but Taylor reminds him that Paine is in power primarily through Taylor's influence . Through Paine, the machine in his state accuses Smith of trying to profit from his bill by producing fraudulent evidence that Smith already owns the land in question . Smith is too shocked by Paine's betrayal to defend himself, and runs away . </P>

Who played saunders in mr smith goes to washington