The U.S. Supreme Court has declined to hear a challenge to Seattle’s first-in-the-nation democracy voucher program for public financing of political campaigns.

The court denied the challenge brought by two local property owners arguing the program violated the First Amendment by forcing them, through their tax dollars, to support candidates they don’t like.

In 2015, Seattle voters decided to tax themselves $3 million a year in order to receive four $25 vouchers they can donate to participating candidates in city elections.

The state Supreme Court unanimously upheld the voucher program last year.