The campaign to pass the county’s half-cent sales tax measure raised nearly a million dollars, a good majority coming from the private Daly City hospital that stands to benefit if officials make good on plans to fund costly seismic upgrades with some of the revenue.

The committee — whose full name is Coalition to Protect Critical San Mateo County Services for Children, Families and Seniors, Yes on measure A, with major funding by Seton Medical Center and the California State Council of Service Employees Issues Committee and additional support by health care, businesses and concerned citizens — raised $990,970.04 for the reporting period through Sept. 30, according to campaign disclosure statements filed with the Elections Office by the Oct. 5 deadline.

Seton Medical Center poured $765,805.93 into the campaign’s war chest directly and through the Daughters of Charity Health System. The two also provided thousands of dollars in consulting and staff time. The California State Council of Service Employees Issues Committee gave $100,000, Labor Organization Local No. 467 gave $5,000 and consultant Laura Jason gave $100.

The committee also spent $728,920.45, including nearly $464,000 on consulting to a Los Angeles-based firm plus nearly $30,000 on mailers.

The opposition campaign has no formal fundraising committee.