RICHMOND, Va. (AP) _ Virginia Gov. Terry McAuliffe has vetoed six redistricting bills he says may be unconstitutional and are overly partisan. The Democratic governor says he doesn’t support the legislation because he believes the General Assembly should only make substantive changes to legislative boundaries once a decade. All six bills were sponsored by GOP lawmakers. Republicans said the bills were minor technical adjustments to current boundaries. Redistricting has been a contentious issue in Virginia. A lawsuit filed in December by a law firm with ties to the Democratic Party argues that state Republicans illegally packed black voters into a dozen House districts when it drew new district lines in 2011.