President Donald Trump leads Democratic nominee Joe Biden in the battleground state of Iowa in three of the latest polls.

Two polls released Sunday showed Trump with slim leads.

An Insider Advantage poll of 400 likely Iowa voters showed Trump ahead of Biden, 47.8%-46.1%. The poll had a margin of error of 4.9%. The final Emerson College poll shows Trump leading Biden in Iowa, 47%-46%. The poll, which surveyed 604 likely voters with a margin of error of 3.9%, showed that Trump had lost a point since its last poll, while Biden stayed the same.

But an Iowa poll released Saturday by Des Moines Register/Mediacom shows Trump leading by 7 points, 48%-41%. Trump has not had a lead that wide in Iowa since March.

The survey of 814 likely Iowa voters was conducted from Oct. 26-29. The poll has a margin of error of 3.4 points.

In September, the Des Moines Register/Mediacom poll showed both candidates even at 47%.

Biden visited Iowa on Friday, where he accused the Trump administration of surrendering to the COVID pandemic. The Iowa Department of Public Health on Saturday reported a spike in COVID cases.

The Cook Political Report rates Iowa, which has 6 electoral votes, as “likely Republican.” In 2016, Trump defeated Hillary Clinton in Iowa, 51.2%-41.7%.

The polling comes as Iowans have coped with the August derecho windstorm, which devastated acres of farmland across the state, and with some polling places closed due to the coronavirus.

There have been four polls released in October that show Biden ahead in Iowa. Two polls showed a tie.

The Associated Press noted on Oct. 23 that the Iowa secretary of state’s office reported 685,234 absentee ballots had been cast, which was on pace for a record.

Iowa is also home to a competitive Senate race. The Des Moines Register/Mediacom poll shows Republican Sen. Joni Ernst leading Democratic challenger Theresa Greenfield by 4 points, 46% to 42%.

Ernst is considered one of Trump’s top allies in the Senate. Greenfield has focused her campaign on protecting safety net programs such as Social Security.

Democrats need three or four seats to retake the Senate, depending on whether Biden wins the White House. Some promising Senate races for Democrats include Arizona, Colorado, Maine and North Carolina.