On Tuesday, voters will decide whether 10 school districts across Sonoma County can borrow a total of $584.2 million in school bonds to make what they describe as critical upgrades to their schools.

Bonds are typically requested for large-scale projects, such as new construction or building renovations. If approved by voters, a district would borrow money from a financial institution and taxpayers would repay it with annual interest over the life of the bonds.

Some of the bond support campaigns are backed by community members and organizations who have donated thousands of dollars. No organization appears to have reported raising money against any of the bond measures.

Here’s what his latest campaign finance filings show.

Yes on Measures Z and AA: Petaluma City Schools

The Yes on Measure Z Committee and AA combined their support for the two bond issues, which would be used to make upgrades to elementary and middle schools in the county’s second-largest district.

The Petaluma City School District is seeking $70 million to repair its elementary schools.

Repairs to the high schools are estimated to cost $159 million.

The support campaign has received $60,400 since its inception, primarily from individual donations from union members.

Of that, $27,732.47 came in the form of personal contributions from electricians in the International Brotherhood of Electrical Workers Local Affairs PAC 551.

Two law firms have contributed $5,500 to back the two bonds. Orbach Huff and Henderson, child welfare attorneys in Los Angeles, contributed $4,000 and Dannis Wolliver Kelley, a San Francisco law firm representing public schools and education, contributed $1,000.

The committee has spent $9,731 on payments for signs, campaign design and mailers split between marketing for both measures.

Healdsburg Elementary School Improvement Committee: Yes on R

They are requesting $49.5 million for building fixes and classroom improvements at Healdsburg elementary schools.

The support campaign has received a total of $16,000 in contributions, including $5,000 from Waterworks Industries, Inc, a Windsor-based water contractor; $6,000 from Lathrop Construction Associates, Inc. of Benicia and finally $5,000 from Quattrocchi Kwok Architects, Inc. of Santa Rosa, who have also contributed to Measure V to improve Windsor schools.

They haven’t spent any of their donations yet.

Support for Windsor Measure V: Windsor Unified School District

They are asking for $122.5 for various school improvements. .

The support committee has received $15,000 in monetary contributions, including $10,000 from Artnz Builders of Petaluma and $5,000 from Quattrocchi Kwok Architects, Inc. of Santa Rosa.

They’ve spent just over $5,000 on large-scale marketing, such as billboards, with a Chico-based company, Creative Composition Inc.

Yes on Measure K Committee: Piner-Olivet School District

The district is requesting $29.5 million for school repairs.

The advocacy campaign has received $10,250 in monetary contributions: $250 from the Piner-Olivet Educators Association, $5,000 from CA+Sa Studio, Inc., a Napa planning and construction firm, and another $5,000 from Van Pelt Construction Services of Fairfield.

They have not yet spent any of their donations.

Adriana Gutiérrez, a Report For America staff member, covers education and child welfare issues for The Press Democrat. You can contact her at Adriana.Gutié[email protected].