Sen. Dean Heller Dean Arthur HellerOn The Trail: Democrats plan to hammer Trump on Social Security, Medicare Lobbying World Democrats spend big to put Senate in play MORE (R-Nev.) holds a 7-point lead in his reelection bid against Rep. Jacky Rosen Jacklyn (Jacky) Sheryl RosenHillicon Valley: Election officials prepare for new Russian interference battle | 'Markeyverse' of online fans helps take down a Kennedy | GOP senators unveil bill to update tech liability protections Google, Apple, eBay to meet virtually with lawmakers for tech group's annual fly-in Senate Democrats demand answers on migrant child trafficking during pandemic MORE (D) ahead of next month's Senate election, according to a poll released Monday.

The Emerson College poll found that Heller, one of the most vulnerable GOP incumbents, leads Rosen 48 percent to 41 percent among likely voters.

Neither candidate has a favorable approval rating overall, the poll found. Forty-two percent of voters view Heller favorably, while 46 percent view him unfavorably.

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By comparison, 44 percent hold a favorable opinion of Rosen, while 45 percent hold an unfavorable opinion.

The poll surveyed 625 likely voters from Oct. 10-12, and has a margin of error of 4.2 percentage points.

The same Emerson poll found that Republican gubernatorial hopeful Adam Laxalt leads Democrat Steve Sisolak (D), 46 percent to 41 percent, with 11 percent of likely voters surveyed still undecided.

The two candidates are vying to replace Gov. Brian Sandoval (R), who is not eligible for reelection because of term limits.

The Nevada race is among a handful of key elections that will determine control of the Senate.

Monday's poll showed Heller with a larger lead than others in the race. A RealClearPolitics average of polls in the election shows the incumbent with a 1.7 percentage point lead.

The Cook Political Report, a nonpartisan election forecaster, rates the Nevada race as a "toss-up."

President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE has already made multiple appearances in Nevada to boost Heller, and is scheduled to return to the state on Saturday for a campaign rally.