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Tucson voters in Wards 3, 5 and 6 should check their ballots, the office said Monday, as 1,294 voters “may have inadvertently received the wrong party ballot.�

The issue was discovered late last week after three voters told the Recorder’s Office they received a mail ballot for the wrong party, the office said.

“The error was a result of a need for Recorder’s Office staff to override a mechanism within the data system that prevents party changes during an active election," the office said in a news release without elaborating.

"The override was necessary because of the overlap of three elections: the Congressional District 7 Special Primary, the City of Tucson Primary and the City of South Tucson Special Recall,� the release said. 

A spokesman for the Recorder's Office, after agreeing to speak Tuesday afternoon with the Star, then declined to answer questions about why the system needed to be overridden. 

“Voters impacted by the error are still eligible to get a ballot at any Ballot Replacement Site now through (Aug. 5) Election Day,� the office said.

Two ballot replacement sites are listed on the Recorder's Office website: The office's main location at 240 N. Stone Ave., and the Sam Lena-South Tucson Library, 1607 S. Sixth Ave.

Voters who have already submitted their ballot or who vote at a replacement site can request a provisional ballot, the office said.

To check your voter registration information, check the Pima County Recorder’s Office’s at .

It's not the first election-related error the Recorder's Office has encountered recently.

In April, the office had to ask about 30,000 voters to provide proof of citizenship to rectify “a decades old error� for some people who registered to vote through the Arizona Motor Vehicle Division.

And last October ahead of the general election, an addressing problem caused the Recorder's Office to delay some 267,000 ballots being sent out.