Signaling that the "post-partisanship" called for by Gov. Arnold Schwarzenegger may be difficult to achieve, the governor's fellow Republicans in the state Senate on Thursday rejected one of his appointees to the State Board of Education. The Senate voted 25-11 on the confirmation of teachers' union activist Joe Nuñez, but with minority Republicans opposed, fell two votes short of the required two-thirds majority. Schwarzenegger reappointed Nuñez, a Democrat and official with the California Teachers Association, to the board in March, despite the fact that Nunez had helped lead a campaign against Schwarzenegger's ballot measures in the 2005 special election.