North Dakota Rep. Earl Pomeroy (D) won't face a House ethics investigation, which could help his reelection prospects. 

The nine-term Democrat was potentially facing an investigation into his fundraising practices, but the Office of Congressional Ethics announced Monday it was dismissing the case.

Pomeroy faces Republican Rick Berg in November. The Ballot Box considers his race a toss-up. 

In North Dakota, Pomeroy told reporters he felt vindicated.

"There was nothing here, so it feels like they must have read the materials I sent them," he said. "They've taken action, and the matter is done."

He added, "There was never more here. I voted to represent North Dakota's interests against the big banks on Wall Street."

Pomeroy wouldn't go into details about what information he provided ethics investigators.

"I'm not going to get into what they asked for. We gave them all the information they needed," he told the Bismarck Tribune.