Seattle became the first U.S. city to approve "democracy vouchers" as a way of public financing of political campaigns in 2015. Supporters say the idea democratizes political campaigns by giving regular folks money to contribute as they choose, presumably taking some power away from rich people, companies and organizations that seem to dominate campaign finance.
You do not get a new batch of democracy vouchers for the general election, but if you didn’t use yours in the primary election, you can still “spend” them during the general election. As the city’s election site explains, you have until Nov. 30 (yes, weeks after the election) to give your vouchers to a campaign.
If you can’t find your vouchers and don’t think you already gave them away, you can access them online. First check your voter registration to make sure it is up to date. If it is, you have the option to access the democracy voucher system online and “spend” your vouchers through the site. If you can find the vouchers in your mail pile, you can still mail them in or hand them directly to a candidate or campaign staffer. (The city does check the vouchers when they’re submitted, so you won’t be able to spend your vouchers twice.) A voter can spend all four $25 vouchers on one candidate or donate them to multiple candidates they support.
Candidates eligible to receive vouchers are listed on the participating candidates' page. Candidates are allowed to ask for your vouchers in the same way they might solicit other kinds of campaign contributions, including at in-person town halls or when they knock on your door during campaigning.