Ernst leads by a nose, Branstad by a lot

Joni Ernst (R) leads Bruce Braley (D) by one point in the race for U.S. Senator from Iowa.

Gov. Terry Brandstad leads Democrat Jack Hatch by nine points.

Rasmussen ranks the race to succeed far Left Sen. Tom Harkin (D), who is retiring, as a tossup. They rate the Iowa race for governor as safe for Republican Branstad.

Meanwhile, only 38% approve of the job President Obama is doing on national security.