If approved, Measure 1 would replace the City Council-approved minimum compensation ordinance that took effect this month. The measure would raise the minimum wage for workers at large employers to $21.10 an hour, matching Tukwila’s rate and ending exemptions in the city’s ordinance that advocates say have resulted in few people seeing a pay increase.

Supporters of the ballot initiative say the city’s actions in recent months — writing ballot descriptors that organizers called biased and sending out printed mailers and buying digital ads about the city ordinance that supporters say lack clarity — are all aimed at confusing voters and persuading them that its existing law is sufficient.