[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/05/10/art.poiznerad.0510.youtube.jpg caption="GOP gubernatorial contender Steve Poizner accuses his rival, Meg Whitman of siding with President Obama on immigration in a new ad."](CNN) - One of the Republicans seeking the GOP gubernatorial nomination in California is accusing his primary rival of standing with President Obama on the hot button issue of immigration.
California State Insurance Commissioner Steve Poizner takes a hard line on immigration in a new 30-second television spot, which will air on broadcast and cable in markets throughout the state, according to Poizner's campaign.
"Who has the courage and values to stand up to illegal immigration?" one narrator asks.
"Not liberal Meg Whitman," another narrator answers. "She supports Obama's amnesty plan."
The conversing narrators note that Poizner supports Arizona's controversial new immigration law and that he "opposes amnesty" and "will cut off benefits to illegal's, saving millions."
The immigration plan being pushed by Senate Democrats includes a process to legalize an estimated 10.8 million illegal immigrants in the United States. It states that all illegal immigrants living in the United States would be required to "come forward to register, be screened, and, if eligible, complete other requirements to earn legal status, including paying taxes."
Read about the Whitman campaign's response after the jump:
Responding to the new Poizner ad, Whitman's campaign released a radio ad Monday. In it, Pete Wilson, a former Republican California governor, vouches for Whitman.
"Meg will be tough as nails on illegal immigration," Wilson says. "She'll fight to secure our border and go after sanctuary cities."
–CNN Dana Bash's and Ted Barrett contributed to this report.