CHARLOTTE, N.C. -- In just the first three days of early voting, Mecklenburg County officials say about 33,000 people have already cast their ballot, an unusually high turnout for early voting according to Michael Dickerson with the Board of Elections.

• Voter Jason submitted his ballot before realizing her voted in the wrong district
• The Board of Elections officials say they had not heard of any other situations of voting on the wrong ballot other than Jason's case
• They encourage all voters to look up sample ballots for their district and learn about the candidates before going to the polls

“There’s a whole lot of stuff out there that you don’t know about,” said Dickerson. “Do your homework now, check your sample ballot, go online, 'cause that’s the really hard part.”

Something Charlotte resident Jason, who didn’t want to use his last name, wishes he had done beforehand.

"I assumed when we went in that we were on the 12th district and when I saw the 9th district pop up on the ballot at first I really didn’t think anything of it,” said Jason. “I said, 'Wait a minute with all this gerrymandering stuff going on. Maybe they switched us back at the last minute or something with the court ruling and all that.' And so I went ahead and clicked submit."

Right after he hit submit, he started having second thoughts as to whether or not he really lived in the 9th district. So he asked his wife who was voting that day too.

"We both live in the same house, both have the same address and she said no I was on the district 12 ballot,” Jason told us.

He says he notified the election judges at the polling place, but they told him there was nothing they could do and he would have to contact the board of elections Monday morning.

“Oh it’s aggravating but I guess the bigger question is if it happened to me, how many other ballots out there are wrong and people voting the wrong precinct?” said Jason. “It could change the outcome of the election."

Which is why he and the Board of Elections are urging all early voters to do their homework.

"If you’ve got a problem or an issue, you’ve got to raise that hand there, stop what you’re doing and let’s find out,” said Dickerson.  “You’ve got great people there at the early voting locations and at the precinct on Election Day that are there to help."

The Board of Elections officials told us Monday they had not heard of any other situations of voting on the wrong ballot other than Jason's case.

But they did say they have had many cases of people thinking they were in the 9th district, only to learn they are actually registered for the 12th district.

They encourage all voters to look up sample ballots for their district and learn about the candidates before going to the polls.