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Poll: Dems hold slim lead in Arizona, Nevada Senate races

Poll: Dems hold slim lead in Arizona, Nevada Senate races
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A poll released Wednesday showed Democratic Senate candidates holding narrow leads in Arizona and Nevada, two states where Democrats have the best chance to pick up seats.

A CNN poll found Rep. Kyrsten Sinema (Ariz.) with a 4 point edge over Rep. Martha McSallyMartha Elizabeth McSallyArizona state senator announces bid for Kirkpatrick's seat Democratic Arizona Rep. Ann Kirkpatrick says she won't seek reelection Senate GOP faces retirement brain drain MORE (R-Ariz.) in the race to replace retiring Sen. Jeff FlakeJeffrey (Jeff) Lane FlakeFive reasons why US faces chronic crisis at border Senate GOP faces retirement brain drain Former GOP lawmaker: Republican Party 'engulfed in lies and fear' MORE (R). A separate CNN poll showed Rep. Jacky RosenJacklyn (Jacky) Sheryl RosenFighting cybercrime begins in the classroom Democratic senators call on CDC to boost accessibility of vaccine scheduling for seniors Bipartisan bill seeks to raise fees for public lands drilling MORE (D-Nev.) leading Sen. Dean HellerDean 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.) by 3 points.

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In Nevada, a state that Democrat Hillary ClintonHillary Diane Rodham ClintonClose the avenues of foreign meddling Pelosi planned on retiring until Trump won election: report Pence autobiography coming from Simon & Schuster MORE narrowly won in the 2016 presidential election, Rosen leads Heller, 48 percent to 45 percent, among registered voters. The poll has a margin of error of 4.2 percentage points.

The Nevada poll surveyed 807 registered voters from Oct. 24-29.

Seventy-eight percent of voters surveyed said they've made up their mind about who they plan to vote for on Nov. 6, while 20 percent said they might change their mind before casting a ballot.

An average of other polls in the Nevada race shows Heller leading by 1.7 points.

In Arizona, where voters have not elected a Democrat to the Senate in 30 years, Sinema leads McSally, 51 percent to 47 percent. That margin is down from September, when Sinema led by 7 points in a CNN poll.

Eighty-six percent of respondents said their mind is made up in the race, while 13 percent said they might still change their decision, according to the most recent poll.

RealClearPolitics average of all polls in the race shows Sinema leading by less than 1 point.

CNN's Arizona poll surveyed 867 registered voters from Oct. 24-29, and has a margin of error of 4 percentage points.

The two races are likely to play a decisive role in determining control of the Senate. To secure a majority, Democrats would likely have to win both states and retain all of their current seats on Election Day.

Both races are rated "toss-ups" by the nonpartisan Cook Political Report and have drawn in key figures from each party. President TrumpDonald TrumpHarry Reid reacts to Boehner book excerpt: 'We didn't mince words' Man arrested for allegedly threatening to stab undercover Asian officer in NYC Trump says GOP will take White House in 2024 in prepared speech MORE held rallies in Arizona and Nevada earlier this month, and he has visited Nevada multiple times in support of Heller.

Former President Barack ObamaBarack Hussein ObamaUS raises concerns about Iran's seriousness in nuclear talks Matt Stoller calls on Biden administration to keep McKinsey away from infrastructure Obamas describe meeting Prince Philip in statement mourning his death MORE and former Vice President Joe BidenJoe BidenBiden eyes bigger US role in global vaccination efforts Trump says GOP will take White House in 2024 in prepared speech Kemp: Pulling All-Star game out of Atlanta will hurt business owners of color MORE stumped for Rosen in Nevada earlier this month. Obama has not visited Arizona, but has endorsed Sinema.