Mason-Dixon has published all of its polling in the closely contested senate races, except for Connecticut. A few were published yesterday. Here's the complete list.
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In MONTANA Democrat Jon Tester, a state senator, is leading Burns by a 47-40 percent margin, with 10 percent undecided and 3 percent favoring Libertarian candidate Stan Jones.
In MARYLAND Democrat Ben Cardin, a U.S. representative, is leading Republican Lt. Gov. Michael Steele by a 47-41 percent margin in the race for an open seat, currently held by retiring Democratic U.S. Sen. Paul Sarbanes.
In MISSOURI U.S. Sen. Jim Talent, a Republican, is neck-in-neck with Democratic challenger Claire McCaskill, Missouri's state auditor. Both had support from 43 percent of the voters in the poll.
In NEW JERSEY Democratic incumbent Sen. Bob Menendez has a 44-41 percent lead over Republican challenger Tom Kean Jr., a state senator.
In OHIO U.S. Rep. Sherrod Brown, a Democrat, holds a slim 45-43 percent lead over Republican incumbent Sen. Mike DeWine.
In PENNSYLVANIA Democratic challenger Bob Casey Jr., the state treasurer of Pennsylvania, has a solid 49-40 percent lead of Republican U.S. Sen. Rick Santorum.
In RHODE ISLAND Sheldon Whitehouse, a Democrat and former attorney general in Rhode Island, is locked in a virtual tie with U.S. Sen. Lincoln Chafee, a Republican, with a 42-41 percent edge in the poll.
In TENNESSEE U.S. Rep. Harold Ford Jr., a Democrat, holds a slender 43-42 percent lead over Republican Bob Corker in the race for the seat held by retiring Sen. Bill Frist, the current Republican majority leader in the U.S. Senate.
In VIRGINIA Incumbent Republican George Allen, a possible presidential candidate in 2008, is in a dead heat with Democratic challenger Jim Webb, with both at 43 percent in the poll.
In WASHINGTON Democratic incumbent Sen. Maria Cantwell, thought to be in a tough race, has a 50-40 percent lead over Republican challenger Mike McGavick.