The Everett Herald reports

More than 1,000 supporters of Initiative 594 to require universal background checks on firearm sales will gather at noon in a Seattle hotel to formally begin their campaign.

Carlee Soto, whose sister Victoria Leigh Soto was killed in the shooting at Sandy Hook Elementary School in December 2012, is one of the scheduled speakers at the event, according to a press release.

Initiative 594 would expand existing state law to require background checks for online sales and private sales, such as those conducted at gun shows. The measure is pushed by the Washington Alliance for Gun Responsibility.

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