Seattle special election will decide social housing tax plan

• The election will also decide the fate of two Seattle Public Schools levies.

How it works: You need to return your ballot to an official ballot drop box by 8pm Tuesday for it to be counted.

• If you've put it in the mail already, that's fine too — but since mailed ballots must be postmarked by Tuesday, election officials say the drop box is your best option at this late date.
• If you need a new ballot, you can print one here.
• If you're not registered to vote yet, you can still do so in person Tuesday at a county vote center and cast a ballot before 8pm.

Catch up quick: Seattle voters are considering two competing measures to help pay for the city's social housing developer, a public development authority created two years ago with the passage of Initiative 135.

• One measure, Proposition 1A, would impose a new tax on businesses and would provide about $50 million per year to the new public development authority.
• The other measure, Proposition 1B, was put forth by the Seattle City Council. It would provide about $10 million per year from existing city funds, with the arrangement set to expire after five years.

• Voters could also choose to enact neither measure.

By the numbers: As of last week, Amazon and Microsoft had each given $100,000 to support the Proposition 1B campaign, which had also received $40,400 from the Seattle Metropolitan Chamber of Commerce, the Seattle Ethics and Elections Commission reported.

• The top donor to the Proposition 1A campaign as of last week was Inatai Foundation, formerly Group Health Foundation, which gave $125,000, per commission records.

Go deeper: Seattle voters weigh how to pay for social housing