Boxer picked up the endorsement of Los Angeles County Sheriff Lee Baca. And they both called for the re-introduction of the assault weapons ban.
Orange County Sheriff Sandra Hutchens endorsed former Hewlett-Packard CEO Fiorina.
Fiorina says she won't take a stand on the assault weapons ban until legislation is drafted.
And Fiorina repeated her demand that Boxer return money from contributors who have shipped jobs overseas.
"Barbara Boxer as well has taken lots of money from many other companies who have outsourced," said Fiorina. "She can't have it both ways. This is hypocrisy, because she is responsible for the destruction of jobs in this state."
Boxer has attacked Fiorina for sending more than 30,000 jobs overseas as head of Hewlett-Packard. Boxer says Fiorina is desperately trying to shift voters away from her record at HP.
"She's just trying to distract from her record, but I'm not going to let her do that, because she's running on her record as the CEO of HP, and she failed in that job, and she shipped jobs overseas," said Boxer.
Boxer voted for the health care reform bill that Fiorina opposes. Fiorina is a breast cancer survivor but thinks health care reform legislation should be repealed.
"This bill has raised the cost of health care, raised the cost of health insurance premiums, begun to throw people off and handed in particular small business a burden of cost and uncertainty that they can't deal with now," said Fiorina.
Fiorina says small businesses can't afford to hire because they are forced to pay for their employees' health care.
Boxer says that's not true. Small businesses have no requirement to provide health care.
"She's inaccurate. There is no mandate on any business to provide health care. What we say is the individual has to seek health care," said Boxer.
Boxer says mend health care reform, don't end it.
Boxer is running for her fourth term in the senate. Fiorina has never held public office. She says she would only serve two terms if elected.
Both Democrats and Republicans hope this will be a decisive race in the battle for control of the senate.