The race for U.S. Senate in Iowa is a dead heat, according to a new poll out Wednesday that shows Rep. Bruce Braley (D) and state Sen. Joni Ernst (R) tied at 43 percent.
The NBC News/Marist poll also shows Sen. Jeanne Shaheen (D-N.H.) leading former senator Scott Brown (R-Mass.), 50 percent to 42 percent, in line with other recent polls showing her out front.
President Obama's approval rating is lagging in both states. It's just 37 percent in Iowa and 39 percent in New Hampshire. About half the voters in both states say the president's signature health-care law is a bad idea.
In Iowa, a seat Democrats are defending, Braley is winning women by eight points while Ernst is winning men by the same spread.
Shaheen is more personally popular than Brown is in New Hampshire, with more than half of voters saying they have a favorable opinion of her. Voters are split on their opinions of Brown.
The poll comes as other recent surveys have shown Shaheen up by between 10 and 12 points.
The NBC/Marist surveys of registered voters in each state were conducted from July 7 to 13.