The Brief Maricopa County election officials call Tuesday's primary a success, with a 26% voter turnout and around 675,000 ballots cast. Maricopa County election officials are calling Tuesday's primary election a success, even as ballot processing continues and preparations begin for November's general election. Election officials said a smooth voter experience was the result of months of preparation. Related articleBy the numbers:Liewer said voter turnout reached about 26%, with the county saying around 675,000 ballots were cast in the primary election. Election officials are also conducting focus groups with poll workers to evaluate the primary election and identify areas for improvement before November.