Sen. Bill Nelson Clarence (Bill) William NelsonDemocrats sound alarm on possible election chaos Trump, facing trouble in Florida, goes all in NASA names DC headquarters after agency's first Black female engineer Mary W. Jackson MORE (D-Fla.) holds a 4-point lead over Florida Gov. Rick Scott (R), a new poll finds in the final stretch of the heated race that could determine which party controls the Senate majority.

A poll conducted by Gravis Marketing found that Nelson, who is running for a fourth term, is ahead of Scott, 49 percent to 45 percent, outside the survey’s 3.5-point margin of error. Six percent of likely voters remain undecided.

Both politicians have positive job approval ratings. Forty-eight percent of likely voters approve of the job Nelson is doing, compared to 41 percent who disapprove. Meanwhile, Scott has a slightly higher approval rating, 52-41 percent.

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President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE also has a positive job approval rating in Florida, with 50 percent who approve and 47 percent who disapprove, an uptick from his past numbers in the state. Trump won the Sunshine State by a razor-thin margin in the 2016 election.

Polls have shown a tight race in Florida. Some polls earlier this month found Nelson with a wider lead, but the last two public polls showed the race in a dead heat. The RealClearPolitics polling average has Nelson leading by 3.5 points.

Gravis also polled the nationally watched governor’s race, which shows Tallahassee Mayor Andrew Gillum (D) leading former Rep. Ron DeSantis Ron DeSantisOvernight Health Care: New wave of COVID-19 cases builds in US | Florida to lift all coronavirus restrictions on restaurants, bars | Trump stirs questions with 0 drug coupon plan On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Florida to lift all COVID-19 restrictions on restaurants, bars MORE (R-Fla.) by 5 points, 51 percent to 46 percent. Only 3 percent of voters said they were undecided.

The poll was conducted from Oct. 22 to 23 and surveyed 773 likely voters in Florida. The margin of error was 3.5 percentage points.