(CNN) - Arizona Republican Sen. John McCain dealt some harsh criticism to California's Democratic Sen. Barbara Boxer on Saturday.
“Barbara Boxer is the most bitterly partisan, most anti-defense senator in the United States Senate today,” McCain said. “I know that because I’ve had the unpleasant experience of having to serve with her.”
McCain spoke at a rally for veterans and supporters in San Diego for Republican Senate candidate and former Hewlett Packard CEO Carly Fiorina.
Fiorina served as an economic adviser on McCain's 2008 presidential campaign and is currently is embroiled in a bitter campaign against Boxer, the three-term incumbent.
“This is not a senator who is a friend of America’s heroes and it is something we must hold her accountable for on November 2nd,” Fiorina told the crowd.
The San Diego rally was held the same day that former Alaska Gov. Sarah Palin spoke at a Tea Party event with Republican National Committee Chairman Michael Steele.
Boxer’s campaign sought to ensure that Fiorina wasn’t able to distance herself from Palin, who endorsed Fiorina during the primary season.
Boxer’s campaign released a web video Saturday that shows clips of Fiorina and Palin complimenting each other. The reel includes Fiorina saying on CNN that she thinks Palin is “qualified to be president,” and Palin calling Fiorina a “common-sense conservative.”
“Carly Fiorina and Sarah Palin have so much in common: they are anti-choice, oppose sensible gun control, and want more offshore oil drilling off California’s coast,” a release from Boxer’s campaign said.
In the latest CNN/Time/Opinion Research Poll of likely voters, 52 percent of respondents said they would back Boxer and 43 percent said they would back Fiorina. The survey had a sampling error of 2.5 percentage points. But a more recent Reuters poll shows Boxer with a four-point advantage over Fiorina.