The Democratic nominee leads 49 percent to 41 percent in Arizona, a state that hasn’t voted for a Democrat for president since 1996. In the Senate race, Mark Kelly, a Democrat, leads the incumbent, Martha McSally.
WASHINGTON — Joseph R. Biden Jr. has established a steady lead over President Trump in Arizona, a traditionally Republican but fast-changing state that is tilting increasingly Democratic, according to a new New York Times-Siena College poll.
Mr. Biden leads Mr. Trump 49 percent to 41 percent in Arizona, with just 6 percent of likely voters saying they were undecided, according to the survey, which was taken before and after the president announced that he had tested positive for the virus that causes Covid-19 but after his caustic debate performance last week. The poll has a margin of error of 4.2 percentage points.
The results are essentially unchanged from a Times-Siena poll of the state last month, which found Mr. Biden leading 49 percent to 40 percent. The poll illustrates the depth of Mr. Trump’s difficulties in Arizona — an incumbent Republican president trailing by a significant margin a month before an election in which most voters have made up their minds.