According the Public Disclosure Commission, the people in favor of new background check requirements for gun purchases - supporters of Initiative 594 - have raised nearly $2.7 million.
The groups opposing that initiative and supporting one on protecting gun rights - Initiative 591 - have raised about $800,000.
The biggest donations to the background checks initiative have come from one family - Nick and Lenore Hanauer. The venture capitalist and business manager have given nearly half a million dollars.
The biggest donations to the gun rights initiative have come from three groups: the Citizens Committee for the Right to Keep and Bear Arms, the Gun Owners Action League and the Washington Arms Collectors.