WASHINGTON – Six days after polls closed in the 2018 midterm elections, some major races remain undecided and legal battles have begun as anxious politicians express concern about the delay in the final results.

Election workers are still counting ballots in Arizona's Senate race, in which Democrat Kyrsten Sinema holds a narrow lead over Republican Martha McSally. In Florida, a recount is underway in both the governor's and Senate races. In Georgia, Democrat Stacey Abrams refuses to concede, though her Republican opponent, Brian Kemp, holds a 60,000-vote lead and claimed victory.

Here's a look at where the races stand:

Arizona

As of Sunday night, Sinema led McSally by 32,292 votes, or 1.5 percent. There were about 215,000 votes left uncounted, and McSally faces an uphill battle because Sinema won three of the four counties where there are still uncounted ballots.

To tie the race, McSally would have to beat Sinema by about 15 percentage points in the remaining ballots, according to an analysis by The Arizona Republic. According to the Republic, the delay in the result is mostly due to the need to verify signatures for voters who voted by mail.

“With the latest ballot count, Kyrsten’s lead is insurmountable," Andrew Piatt, Sinema's campaign manager, said in a statement Sunday.

McSally's campaign called on voters to report any voting irregularities they might have experienced. National Republican figures, including President Donald Trump and the National Republican Senate Committee, have suggested that Democrats are "cooking the books."

More:Kyrsten Sinema widens lead again over Martha McSally in pivotal day for Arizona's U.S. Senate race

Florida

The state that was home to the most-watched recount in history in 2000 is amid a statewide machine recount of more than 8 million votes.

Florida's secretary of state ordered recounts Saturday for the Senate race – in which Republican Gov. Rick Scott held a 12,562-vote, or 0.15 percent, lead over incumbent Democratic Sen. Bill Nelson – and the race for governor, in which Republican Rep. Ron DeSantis led Democratic Tallahassee Mayor Andrew Gillum by fewer than 34,000 votes, or a margin of .41 percent, according to the Florida Division of Elections.

The recount must be completed by 3 p.m. Thursday.

Nelson filed a lawsuit Monday against the Florida Department of State asking that ballots be counted that were postmarked before Election Day but didn't arrive until after the polls closed.

Scott, who filed his own legal motions trying to make sure ineligible votes aren't counted, accused election officials in the Democratic strongholds of Broward and Palm Beach Counties of "rampant fraud" and asked the Florida Department of Law Enforcement to investigate. Monday, Scott called Nelson a "sore loser" who is "trying to steal an election."

Trump called for Scott and DeSantis to be declared the winners in a tweet Monday, arguing an "honest vote count is no longer possible" because the ballots are "massively infected."

Broward Chief Circuit Chief Judge Jack Tuter said Monday that he saw no evidence of fraud in Broward County and urged both sides to "ramp down the rhetoric."

Florida election overtime:Andrew Gillum pulls back concession as Ron DeSantis calls for unity

More:Recount off to a slow start in Florida's Senate, governor races

Georgia

The contentious race for Georgia's open governor's seat remains undeclared. Abrams said there are thousands of uncounted provisional ballots that could push her into recount territory. Kemp, her opponent who stepped down as Georgia secretary of state after the election, held a 58,875-vote, or 1.5 percent, lead.

Saturday, Kemp's campaign accused Abrams of ignoring the will of the people and "making up numbers" to keep the race alive. "Abrams’ antics are a disgrace to democracy and completely ignore the will of the people," the Kemp campaign said in a statement.

Abrams accused Kemp of "voter suppression" by disproportionately rejecting African-American voter registration applications before the election. Sunday, her campaign filed a lawsuit challenging the rejection of absentee and provisional ballots and asking that they be counted.

'A disgrace to democracy':Democrat Stacey Abrams pressured to concede Georgia race

House races

The Democrats took control of the House of Representatives last Tuesday. The question is how large their majority will be.

There are nine House races that remain uncalled by the Associated Press: three in California, one in Georgia, one in Maine, one in New Jersey, two in New York and one in Utah. Republicans lead in five of those races.

If those margins hold, Democrats would end up with 231 House seats (they had 193 before the election), and Republicans would have 204 (down from 235).

Contributing: Christal Hayes; Yvonne Wingett Sanchez and Ronald J. Hansen, The Arizona Republic; Mary Helen Moore, Jeffrey Schweers and Eric Hasert, Florida Today; The Associated Press