DENVER -- Arapahoe County Clerk and Recorder, Nancy Doty, has volunteers pulling an all-nighter Monday to process as many mail-in ballots as possible.

"We have had about 200,000 people who have already voted in Arapahoe County," said Doty.

Doty is not alone, as counties all across the state are reporting record numbers of mail-in ballots. But the high percentage of ballots already counted doesn't mean the results will come quickly.

"The days of having your close to final results by 10 p.m. are over," said Alton Dillard, spokesman for Denver Elections. "There are just too many moving targets in the election world these days. So we made it clear from day one it would take longer to be counted and we would be counting ballots well into Wednesday morning and that still holds true."

Dillard said paper and mail-in ballots take so long to count because the process to tabulate them properly is time consuming.

Counties like Larimer and Jefferson have finished counting the mail-in ballots received by 5 p.m. Monday. Volunteers worked extra hours to get them done before Election Day.

"We still have about 45,000 ballots still outstanding in the county and we can comfortably do that in a day," said Pam Anderson, Jefferson County Clerk and Recorder.