The race to fill a vacant seat on the San Diego County Board of Supervisors is entering the home stretch – and an onslaught of high-dollar contributions is powering the candidates’ final sprint toward a July 1 voting deadline.

Big-dollar checks are flowing into campaign accounts daily, including a recent eye-watering $250,000 contribution from an electrical workers union to a committee supporting Democrat Paloma Aguirre and $50,000 from the developer of a controversial proposed landfill to a committee supporting Republican John McCann.

Political analyst Mason Herron, who tracks local campaign spending, said he can barely keep up with it all.

“Money is flowing in thick and fast – and confusingly,” he said.

Why it all matters: The District 1 supervisor race will tip the partisan balance

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