Heitkamp attacks environmental regulations, promises bipartisanship in new ad

"It was a government land grab and it happened when I was attorney general. The federal government tried to misuse environmental easements to try to take over North Dakota farmland and put farmers in prison. It wasn't right and I beat the government in court. I'm Heidi Heitkamp and I approve this message because we need a senator who will put partisan politics aside and do what's right for North Dakota."

Heitkamp is running a strong race against Rep. Rick Berg (R-N.D.) in the Republican-leaning state, helped by high name recognition and personal popularity. This isn't the first time she's broken with her party on environmental issues: She also vocally criticized Obama's decision to delay construction on the Keystone XL oil and gas pipeline.

The Hill rates this race a "toss-up."