(NewsNation) — A presidential race between former President Donald Trump and Vice President Kamala Harris that was considered neck and neck entering Election Day will not be decided Tuesday or Wednesday night, a political consultant and polling expert told NewsNation.

Frank Luntz said he expects all seven swing states to be decided by as little as 3% and, in some cases, 1%.

“That’s how close this is,” Luntz told NewsNation. “Everything says that this is going to take a while to do, and we better do it right because Americans won’t forgive us if we don’t.”

Several states reported issues at various polling places. In Nevada, a significant number of ballots were rejected because of matching signature issues in a county considered a Democratic stronghold, NewsNation local affiliate WLAS reported. Milwaukee election officials experienced issues with ballot tabulators, and 30,000 ballots will need to be retabulated. Polling locations in Georgia experienced unsubstantiated reports of bomb threats, and voting hours have been extended, NewsNation reported Tuesday night.

Yet while election results may be delayed until later this week, Luntz said that several trends are continuing. Harris is continuing to do well among older women voters, while Trump continues to gain support from union voters in industrial Midwestern states, Luntz said.

However, Luntz believes that the election will ultimately come down to Hispanic and Latino voters, especially those in Pennsylvania, Arizona, and Nevada. Among Arab American voters outside of Detroit, voter turnout remains in question and could impact up to 100,000 votes in Michigan, Luntz said.

“Those are the key votes, and that’s going to determine who wins and who loses,” Luntz said.