An attempt to repeal Washington’s landmark climate law failed massively

The people of Washington state elected to save the most ambitious price on carbon in the country. A large majority of voters, 62 percent, rejected a ballot initiative to repeal the state’s Climate Commitment Act, the cap-and-trade law that has already raised more than $2 billion for cleaning up transportation, shifting to clean energy, and helping people adapt to the effects of a changing climate.

On an otherwise depressing election night for voters who consider climate change a top concern...