OLYMPIA -- Signed petitions on an initiative to reiterate the supermajority needed for the Legislature to approve tax increases will be turned in Friday morning. 

Tim Eyman and other sponsors of Initiative 1185 will be carting boxes of petitions into the Secretary of State's Elections Division office at 10:30 a.m., Eyman said. That's about 90 minutes after petitions for an initiative to allow public schools to set up charter schools

His announcement followed just one day after he told supporters "we're not there yet" and urged them to get even partially filled petitions to the campaign offices because "every signature counts."

Initiatives require about 242,000 valid signatures from registered voters to qualify for the ballot, and state elections officials always urge campaigns to collect at least an extra 15 percent to account for duplicates, people who arent registered and signatures that don't match the state's voter registry.