Gov. John Kitzhaber and former Gov. Barbara Roberts attended a Valentine's Day kick-off event for a campaign to reverse Oregon's voter-approved ban on gay marriage, a spokesman said. Both signed a sponsorship petition for the effort, said Kitzhaber spokesman Tim Raphael. Basic Rights Oregon, the state's leading gay-rights group, formed a campaign organization to get a constitutional amendment on the November 2014 ballot. For a measure to reverse the gay-marriage ban, the group first needs to collect 1,000 valid sponsorship signatures.