Seven Idaho daily newspapers, including The Spokesman-Review, have joined together to commission the Idaho Newspapers Poll, a statewide poll of 625 likely Idaho voters taken Sept. 13-15 by Mason-Dixon Polling & Research of Washington, D.C. Today, the first installment of poll results is out in all the papers, which include the Lewiston Tribune, the Moscow-Pullman Daily News, the Idaho Statesman, the Idaho Press Tribune in Nampa, the Post Register in Idaho Falls, and the Times-News in Twin Falls.

The top news today from the poll: Gov. Butch Otter leads Democratic challenger 45-29 percent with 20 percent undecided; and 1st District Congressman Walt Minnick leads GOP challenger Raul Labrador 46-36 percent with 16 percent undecided. Minnick's lead shrinks, however, among the poll's North Idaho respondents to 43-40, which is within the poll's margin of error; you can read our full story here and see today's full results here.

The statewide poll’s margin of error is plus or minus 4 percentage points. In the 1st CD, the margin of error is 5 percent; sixty additional interviews were conducted in the 1st Congressional District to bring the total sample size there to 400 likely voters, and 15 additional interviews were conducted in the Second Congressional District to bring the sample size there to 300, with the extra interviews covering only the congressional races. Additional installments of the joint project coming this week will look at taxes (Wednesday), education (Thursday) and party affiliation (Friday).