US PRESIDENT Donald Trump and Democratic presidential nominee Joseph R. Biden participate in their first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, US, Sept. 29, 2020. — POOL VIA REUTERS

DEMOCRATIC President Joseph R. Biden trails Republican frontrunner Donald Trump in five of the six most important battleground states exactly a year before the US election as Americans express doubts about Mr. Biden’s age and dissatisfaction toward his handling of the economy, polls released on Sunday showed.

The polls were conducted by the New York Times and Siena College. Mr. Trump, leading the field for his party’s 2024 nomination as he seeks to regain the presidency, leads in Arizona, Georgia, Michigan, Nevada and Pennsylvania, with Mr. Biden ahead in Wisconsin, the polls showed. Mr. Biden defeated Mr. Trump in all six states in the 2020 election. Mr. Trump now leads by an average of 48% to 44% in the six states, the polls showed.

While polls assessing the national popular vote have consistently showed Mr. Biden and Mr. Trump in a close race, presidential elections typically are decided by the outcomes in a handful of so-called swing states.

Mr. Biden’s victories in Arizona, Georgia, Michigan, Pennsylvania and Wisconsin -— all swing states that Mr. Trump carried in 2016 — were instrumental in his 2020 victory. Mr. Biden likely would need to carry many of those state again to win re-election.

“Predictions more than a year out tend to look a little different a year later. Don’t take our word for it: Gallup predicted an 8 point loss for President Obama only for him to win handedly a year later,” Biden campaign spokesperson Kevin Munoz said in a statement, referring to Democrat Barack Obama’s 2012 victory over Republican Mitt Romney.

Mr. Munoz added that Biden’s campaign “is hard at work reaching and mobilizing our diverse, winning coalition of voters one year out on the choice between our winning, popular agenda and MAGA (Trump’s “Make America Great Again” slogan) Republicans’ unpopular extremism. We’ll win in 2024 by putting our heads down and doing the work, not by fretting about a poll.”

Mr. Biden’s multiracial and multigenerational coalition appears to be fraying, the polls showed.

Voters under age 30 favor Mr. Biden, who is 80, by only a single percentage point, his lead among Hispanic voters is down to single digits and his advantage in urban areas is half of Mr. Trump’s edge in rural regions, the polls showed.

Black voters — a core Biden demographic — are now registering 22 percent support in these states for Mr. Trump, a level the New York Times reported was unseen in presidential politics for a Republican in modern times. 

“I was concerned before these polls and I’m concerned now,” Richard Blumenthal, a Democratic US senator from Connecticut, told CNN.

“No one is going to have a runaway election here. … We have our work cut out for us,” Mr. Blumenthal added. — Reuters