Jurors sent the note after about four hours of deliberation on the fate of the powerful senator, who is accused of lying on Senate financial disclosure forms about home renovations and gifts from a wealthy Alaska businessman.
The note asked the judge if the jurors could go home early for some "clarity." They left without reaching a verdict.
The trial went to the jury earlier Wednesday and may affect one of the tightest and most closely watched Senate races in the nation.
"The case is yours," U.S. District Judge Emmet Sullivan told the eight women and four men shortly before noon Wednesday.
Stevens, 84, is charged with lying on Senate financial disclosure forms about $250,000 in home renovations and other gifts he received from his friend, millionaire oil contractor Bill Allen.
The longest-serving Senate Republican, Stevens is counting on a speedy verdict that will send him back to Alaska vindicated in time for Election Day. He is locked in a tight race with Anchorage Mayor Mark Begich, a Democrat.
Democrats, who are hoping to capture a filibuster-proof Senate majority, have jumped at the chance to seize a seat that Stevens has held for 40 years. They have invested heavily in the race, running television advertisements starring fictional FBI agents and featuring excerpts from wiretaps.
The monthlong trial revealed that employees of oil services company VECO Corp. transformed the senator's house from a small mountain A-frame into a handsome, two-story house with wraparound porches.
Stevens says he paid every bill he received and had no idea he was getting anything for free.
Sen. John Ensign, R-Nev., chairman of the National Republican Senatorial Committee, said the outcomes of the election and the trial are linked.
"If the trial comes to a conclusion and, as he believes, that he is found innocent, I think that he will win that election up there," Ensign said Tuesday. "If it goes the other way, obviously it really won't matter what happens in the election."