Outside campaign committees affiliated with two powerful city employee unions have spent more than $2.2 million on their bid to make Los Angeles City Controller Wendy Greuel the city’s next mayor, according to Ethics Commission records posted Saturday.

Working Californians, which is heavily backed by the Department of Water and Power union, reported spending an additional $770,000 on Greuel, much of it for campaign commercials. That brings the group’s total to $1.65 million — money that has also gone toward billboards, pollsters and campaign consultants working on Greuel’s behalf.

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