(CNN) - Embattled California Democratic Sen. Barbara Boxer's campaign released a new radio ad Monday that features President Barack Obama reaching out to voters on Boxer's behalf.
In the ad, entitled "Shoulder to Shoulder," the president says, "This is Barack Obama. On November 2, California has a choice, and the stakes couldn't be higher. I'm asking you to get out and vote for Senator Barbara Boxer."
Obama advocates for Boxer's stance on energy, financial regulation and taxes.
"Whether it's new clean energy jobs or leading the fight against tax breaks for companies that ship jobs overseas, she's determined to get the words 'Made in America' on our products again," Obama says.
The ad will air in the Los Angeles, San Francisco, San Diego and Sacramento markets.
California Republican Senate candidate Carly Fiorina's campaign responded to the ad.
"Barbara Boxer should be ashamed of herself for putting the president of the United States up to participating in this latest installment of her desperate and deceptive advertising campaign to save her political career," Fiorina spokeswoman Andrea Saul said in the statement. "Barbara Boxer talks all the time about how she wants to see the words 'Made in America' again, but ads like these make it clear the word she really wants to see again is 'senator' in front of her name for another six years."