Voters in Washington state are deciding whether to kill or keep a law intended to encourage companies to invest in technology to curb greenhouse gas emissions.

The proposal (Initiative 2117) seeks to repeal the state's "cap-and-invest" program, which aspires to cut carbon emissions by 95% by 2050.

New York, Maryland, and Pennsylvania are among states eyeing their own cap-and-invest programs, so the Nov. 5 vote will have "implications beyond Washington state," said state Sen. Joe Nguyen (D), the program's sponsor in the legislature.

A different greenhouse gas-related ballot question in South Dakota has the potential to stall an ...