2023 Washington Code 39.40.010 – Forty percent poll of voters required

2022 Washington Code 39.40.010 – Forty percent poll of voters required

2020 Washington Code 39.40.010 – Forty percent poll of voters required

2019 Washington Code 39.40.010 – Forty percent poll of voters required

2018 Washington Code 39.40.010 – Forty percent poll of voters required

2016 Washington Code 39.40.010 – Forty percent poll of voters required

2015 Washington Code 39.40.010 – Forty percent poll of voters required

2014 Washington Code 39.40.010 – Forty percent poll of voters required

2013 Washington Code 39.40.010 – Forty percent poll of voters required

2009 Washington Code 39.40.010 – Forty percent poll of voters required