Across California, bleary-eyed voting watchdogs, registrars and public officials spent the day trying to digest [Secretary of State Debra] Bowen's late Friday decision to limit electronic balloting and install various new safeguards. The former Democratic state senator, an electronic voting skeptic who fought in the Legislature to require a paper trail for digital ballots, [took action] after University of California researchers found security flaws in three electronic systems. Barring a legal challenge, Bowen's actions will force 21 counties to shutter most of their touch-screen machines. Those counties, who use machines made by Diebold Election Systems and Sequoia Voting Systems, will instead ask most voters to fill bubbles on paper ballots to make their selections, a method known as optical scan." Dan Ashby, [an] electronic voting critic who heads the California Election Protection Network, praised Bowen for her actions. "Election officials are probably going to fight tooth and nail against the decertification order, but we think truth and logic are on our side," Ashby said. "The best use for the machines would be to melt them down for scrap. But before we can do that, we have to do a withdrawal in stages." Bowen estimated that more than two-thirds of California voters already cast paper ballots, a number she believes will continue to rise as more people vote absentee.