Democrat Kyrsten Sinema expands lead over Republican Martha McSally in Arizona Senate race

Krysten Sinema debates Martha McSally
(Image credit: AP Photo/Matt York)

Democratic Rep. Kyrsten Sinema (Ariz.) has opened up a 6-point lead over GOP rival Rep. Martha McSally in Arizona's hard-fought Senate race, according to a new NBC News/Marist poll released Tuesday. In the same poll last month, Sinema led McSally by 3 points, 48 percent to 45 percent. Her current 50 percent to 44 percent lead among likely voters slips to 3 points when Green Party candidate Angela Green is included, Marist found.

Sinema's lead is fueled by lopsided support from women, Latinos, and independents. It is within the poll's ±5.4 percentage points margin of error for likely voters, and the RealClearPolitics average of polls, which doesn't include this one, has McSally up 0.7 points. "Arizona may play a pivotal role in determining the makeup of the next Senate," says Marists's Lee Miringoff. "Right now, the contest is very competitive." The poll was conducted by phone Oct. 23-27 among 793 registered voters and 506 likely voters, 44 percent of whom said they have already voted.

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Peter Weber, The Week US

Peter has worked as a news and culture writer and editor at The Week since the site's launch in 2008. He covers politics, world affairs, religion and cultural currents. His journalism career began as a copy editor at a financial newswire and has included editorial positions at The New York Times Magazine, Facts on File, and Oregon State University.