On Friday, October 16, the people in Washington state who desire to keep private the names and addresses of people who signed the R-71 Referendum petition asked U.S. Supreme Court Justice Anthony Kennedy to get involved in the case. Kennedy is the U.S. Supreme Court member who handles such requests from the 9th circuit. Kennedy has been asked to order the Secretary of State not to release the names and addresses, while the constitutional issue is being decided. On Friday evening, Kennedy asked the State of Washington to file a response, which is due at 3 p.m. on Monday, October 19. The case is Doe v Reed. In the meantime, the 9th circuit (which had ruled on October 15 that the names and addresses should be released) has been asked to suspend its order until the U.S. Supreme Court has considered the matter.
Here is the 36-page brief filed in the U.S. Supreme Court. Thanks to Thomas Jones for the link.