(CNN) - The National Republican Senatorial Committee spent $162,000 on an independent expenditure effort in Alaska, according to reports filed with the Federal Election Commission Wednesday.
The money represents the first influx of cash by the NRSC into the Senate race, suggesting Republicans are worried about the seat. The funds are most likely an advertising buy for Republican Senate candidate Joe Miller, indicating that Republicans are nervous about the tight race.
But a spokesman for the NRSC would not comment except to confirm the expenditure, as there is a separation between the NRSC and its independent expenditure arm.
Republican Tea Party backed candidate Joe Miller will face Democratic Mayor Scott McAdams and incumbent Republican Sen. Lisa Murkowski who is running as a write-in candidate in the November election. Murkowski lost the Republican primary to Miller in August.
Miller has been at the center of two recent controversies that have received national attention. A reporter was arrested at a campaign event he held in Alaska on Sunday. And on Monday, the candidate admitted he had been disciplined for misusing government computers, but said that was not the reason he left his job as attorney for the North Star Borough, a revelation he made to Chief National Correspondent John King on John King, USA.
Recent polling suggests the race between Murkowski and Miller is close. A recent CNN/Time/Opinion Research Corporation poll showed Murkowski just two points behind Miller. Democrat McAdams trailed Murkowski by 14 points, while four percent said they were either undecided or not supporting any of the three candidates listed in the survey.