UPLAND Steve Poizner may be losing ground in his bid for the Republican nomination for governor, but he isn't going down without a fight. Poizner ramped up his campaign Wednesday as he crisscrossed Southern California, addressing Republicans in Upland in the Inland Empire at noon, rushing west for a news conference in downtown Los Angeles and ending the day at a town hall in the San Fernando Valley neighborhood of Sherman Oaks. His message at the campaign stops was clear: Voters want more experience in a candidate than they'll get from rival Meg Whitman. He also spent much of the day promising to get tough on illegal immigration if he's elected governor, including canceling contracts with any state-hired companies who employ such immigrants. Whitman took the day off from public events. "When people do their digging, they're going to realize that Meg Whitman, she has sure gotten a lot of attention by spending $90 million, bought a lot of support out there," Poizner told a small but enthusiastic gathering of San Bernardino County Republicans in Upland. "But that's not what Republicans are looking for.