The San Mateo County Central Labor Council has spent about $7,400 campaigning for and against Menlo Park council candidates, according to finance reports filed with the California Secretary of State’s office in Sacramento.

The labor council and the Service Employees International Union (SEIU), which represents city employees other than police, have endorsed two candidates: Candidates Richard Cline and Heyward Robinson.

Mr. Cline and Mr. Robinson are opposing the "incumbent" slate of Lee Duboc, Mickie Winkler and John Boyle (a challenger endorsed by the incumbents).

The labor council has mailed two fliers to Menlo Park residents that urge voters to oppose incumbents Ms. Duboc and Ms. Winkler; one of those fliers endorses Mr. Cline and Mr. Robinson.

Spokespeople from SEIU said the union would campaign against council members who support the privatization of city services.

Although no candidates said he or she is entirely opposed to privatization, Ms. Duboc and Ms. Winkler pushed the privatization of the city’s aquatics center and child care programs as members of the council.

The incumbents and Mr. Boyle did not seek endorsement from the unions.

SEIU Local 715 did not make direct contributions to candidates’ campaigns, but donated $2,975 to the labor council, according to the reports.

Mr. Cline did receive $1,000 from a Burlingame-based union, the Plumbers and Steamfitters Local 467.

Are you receiving Express, our free daily e-mail edition? See a sample and sign-up for Express.