Wisconsin Republican Senate candidate Leah Vukmir says she raised more than $400,000 in the final three months of 2017, while a super PAC supporting her brought in another $1 million.

Vukmir is a state senator from Brookfield facing Delafield business consultant Kevin Nicholson in the GOP primary.

As of Monday afternoon, Nicholson's campaign spokesman announced the candidate has raised twice as much as his primary challenger Vukmir in the last three months of 2017, raising more than $800,000 for the three-month period. That brings his haul since he got into the race to $1.2 million.

Vukmir said Monday she brought in more than $400,000. That comes after she raised about $242,000 in the first three weeks of her candidacy prior to that. To date she's raised about $645,000.

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The Wisconsin Next PAC that supports Vukmir says it brought it more than $1 million and will report having more than $1 million cash on hand.

Nicholson has been benefiting from PAC support, including one run by former U.S. Ambassador John Bolton that was spending $1 million alone on pro-Nicholson ads this week.

The winner of the GOP primary will face Democratic Sen. Tammy Baldwin in November.

Editor's Note: This story was updated at 10:25 a.m., Monday, Jan 8, 2018 to include figures from Nicholson's campaign spokesman.