Photo: Win McNamee/Getty Images

South Bend Mayor Pete Buttigieg made gains in Iowa, as former Vice President Joe Biden slipped in a New York Times/Siena College poll of voters likely to attend the state's caucuses. Sen. Elizabeth Warren leads the deadlocked pack, with Sen. Bernie Sanders coming in next.

Why it matters: "Buttigieg is aiming to peel away support from Mr. Biden by offering himself as the viable moderate alternative" to Warren and Sanders, the New York Times wrote last week. That effort appears to be working.

  • Buttigieg has also put a strong focus on Iowa, opening 20 field offices and hiring nearly 100 staff members statewide.

By the numbers:

  • Warren: 22%
  • Sanders: 19%
  • Buttigieg: 18%
  • Biden: 17%
  • Klobuchar: 4%
  • Harris: 3%
  • Yang: 3%

Of note: The poll has a margin of error of +/- 4.7 percentage points, meaning Warren, Sanders, Buttigieg and Biden are statistically tied for for the top spot.

Go deeper: The problem with 2020 presidential polls

Go deeper

Biden releases 2019 tax returns ahead of debate

Photo: Alex Wong/Getty Images

Joe Biden's campaign released his 2019 tax returns on Tuesday, showing that he and his wife, Jill, paid nearly $300,000 in federal taxes last year.

Why it matters: The release, timed just hours before the first presidential debate, comes days after a bombshell New York Times report said that President Trump paid only $750 in federal taxes in 2016 and 2017. Biden's team is hoping to make the tax contrast a sticking point during their showdown.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 2:15 p.m. ET: 33,454,037 — Total deaths: 1,003,571 — Total recoveries: 23,204,219Map.
  2. U.S.: Total confirmed cases as of 2:15 p.m. ET: 7,165,067 — Total deaths: 205,476 — Total recoveries: 2,794,608 — Total tests: 102,342,416Map.
  3. Health: Americans won't take Trump's word on the vaccine, Axios-Ipsos poll finds.
  4. States: NYC's coronavirus positivity rate spikes to highest since June.
  5. Sports: Tennessee Titans close facility amid NFL's first coronavirus outbreak.
  6. World: U.K. beats previous record for new coronavirus cases.

NYC's coronavirus positivity rate spikes to highest since June

New York Mayor Bill de Blasio. Photo: Noam Galai/Getty Images

New York City's coronavirus positivity rate has ticked up to 3.25%, its highest since June, Mayor Bill de Blasio said at a news conference on Tuesday.

Why it matters: The jump — from 1.93% on Monday — came on the first day that public elementary classrooms reopened in the city after months of closures, but guidelines state that all public schools will have to shut if the citywide seven-day positivity rate stays above 3%.