A super PAC linked to Senate Minority Leader Mitch McConnell (R-KY) is planning to make its first expenditure in the Nevada Senate race, less than two weeks before the election.

Per reporting from NBC News, Senate Leadership Fund (SLF) is expected to make a $6.2 million ad buy to support Republican candidate Sam Brown. SLF had previously spent on Senate contests in Michigan, Montana, Ohio, Pennsylvania and Wisconsin, but avoided the race in Nevada, where Sen. Jacky Rosen (D-NV) has maintained a polling lead all cycle long.

Polls have begun to tighten — Rosen’s recent leads have hovered around 4 percentage points or 5 percentage points, when she was routinely seeing double-digit leads earlier — and early voting data looks promising for Republicans, who have a turnout lead in the pre-election period for the first time since 2008.

"President Trump is doing very well in Nevada and we think Sam Brown can too,” SLF President Steven Law told NBC News.

In another sign that Republicans are beginning to feel bullish about Nevada, National Republican Senatorial Committee chairman Sen. Steve Daines (R-MT) will be coming to the Silver State on Tuesday to make a last-minute campaign swing with Sam Brown, according to a source familiar with Daines’ travel.

Even with SLF’s funding, Democrats have still spent nearly $25 million more than Republicans in the Nevada Senate race, between past and future reservations, according to AdImpact. Analysts and operatives believe Rosen’s early spending advantage — launching an advertising blitz in the spring, during the Republican primary — helped contribute to her consistent polling lead.

And Senate Majority PAC (SMP), the Democratic counterpart to SLF that is linked to Sen. Chuck Schumer (D-NY), has been active in Nevada all cycle. In the final two weeks of the election, SMP is spending $8.3 million in Nevada, more than the group is spending in all but two swing states — a sign that they’re expecting a competitive race.

“Mitch McConnell ignored Sam Brown for months," SMP spokesperson Hannah Menchhoff said in a statement. "That he’s now coming in to try and appease the party elite, says more about Brown’s quality as a candidate than their actual belief he can win.”

In 2022, Nevada was home to the closest Senate race in the country — Sen. Catherine Cortez Masto (D-NV) won by less than 1 percent of the vote.

This story was updated at 2:00 p.m. on 10/24/24 to add comment from Senate Majority PAC.