A new poll from a highly-rated pollster finds Arizona GOP senatorial candidate Martha McSally with a four-point lead over Democratic candidate Congresswoman Kyrsten Sinema. The Siena College poll, which received an “A” rating from Nate Silver’s fivethirtyeight.com, showed McSally garnering 49% of respondents’ votes, with Sinema at 45%. 6% of voters were undecided.
Arizona has not elected a Democratic senator since 1988, when Senator Dennis DeConcini was reelected; he served from January 1977 until January 1995.
Up until early October, Sinema had been leading McSally in the polls. In September she led McSally by 7% in a CNN poll; 3% in a Marist College poll; 6% in an Emerson College poll; 3% in a Suffolk University poll; 2% in a Fox News poll that ended October 2, and 3% in a YouGov poll ending October 5.