SACRAMENTO, Calif. (AP) – California’s June primary saw the highest percentage of voter turnout in a midterm primary election since 1998. More than 37 percent of registered voters cast ballots in the primary. That’s up more than 12 percent from the previous midterm primary in 2014, when turnout hit a record low. It is closer to turnout levels in the 2010 and 2006 primaries, when 33 percent of registered voters participated. California Secretary of State Alex Padilla certified the results Friday. He said the numbers show progress but that the state needs to boost turnout further. California Civic Engagement Project Director Mindy Romero says high-profile contests for governor and U.S. Senate likely helped increase voter participation. She says California typically ranks low among other states in terms of turnout.