WASHINGTON – Three-term Senator Barbara Boxer is “too extreme for California,” said Carly Fiorina, the wealthy businesswoman challenging the Democratic incumbent in one of the most liberal U.S. states.

“She is an extreme liberal, she is hyper-partisan,” Fiorina said yesterday of Boxer, an ally of President Barack Obama. Fiorina is a former CEO of Hewlett-Packard.

Fiorina told “Fox News Sunday” that swing voters in California would turn the race her way before Nov. 2 midterm elections.