Prominent national Republicans will offer their stamp of approval to former Gov. Mike Rounds, a South Dakota Republican, with a fundraiser in Washington later this month.

Senate Minority Leader Mitch McConnell, R-Ky., National Republican Senatorial Committee Chairman Sen. Jerry Moran, R-Kan., and Sen. John Thune, R-S.D., will be among the bold-face names soliciting checks for Rounds on the evening of Feb. 25 at NRSC headquarters, according to an invitation obtained by the Washington Examiner.

Also slated to attend are Sens. John Barrasso, R-Wyo., Roy Blunt, R-Mo., John Cornyn, R-Texas, Richard Burr, R-N.C., Chuck Grassley, R-Iowa, Jim Inhofe, R-Okla., Lisa Murkowski, R-Alaska, and Roger Wicker, R-Miss.

Rounds is considered the frontrunner among five Republicans competing for the party's nomination in South Dakota, and outright support from powerful Republicans will no doubt boost his standing further. His fundraising to date has been robust, and he finished the year with roughly $1.15 million.

The Democratic candidate in the race will likely be Rick Weiland, a former Senate aide. Although the Senate seat has been held by a Democrat, Sen. Tim Johnson, who will retire at the end of his term, Republicans are slightly favored to win it over in November.