Washington (CNN) - Legendary Hollywood actor/director Robert Redford is the latest big gun being trotted out by the campaign of Sen. Barbara Boxer as part of her reelection effort. Supporters of the California Democrat received an email from Redford on Wednesday, complete with a fundraising plea.
Focused on the environment, the letter praises Boxer's work on the issue. Boxer has "been there with us all along, long before cameras were rolling in the Gulf," Redford wrote, referencing the Gulf coast oil spill.
"From day one, Barbara has been a champion for environmental protection in the U.S. Senate. Without her there to lead the fight, I fear that instead of learning the lessons of this moment and moving forward, we could find ourselves slipping backward," Redford says.
Redford's letter heaps praise on Boxer while criticizing her Republican challenger Carly Fiorina over the same set of issues.
"Like Sarah Palin, Carly Fiorina is a strong supporter of "drill, baby, drill" - even in the wake of the BP disaster in the Gulf," Redford writes. "Fiorina opposes the commonsense efforts of Senator Boxer, Senator Feinstein, and their West Coast colleagues to extend a moratorium on new drilling off the Pacific coast."
And like most emails from politicians locked in a tight re-election battle, Redford makes a pitch for donations, asking for contributions of five dollars or more.
The Fiorina campaign hit back Wednesday, saying that Boxer was "calling in favors from anyone who will answer."
"Barbara Boxer is so nervous about voters' rejection of her job-killing policies ... that she's calling in favors from anyone who will answer. After more than three decades as a career politician, Boxer has a record of abject failure for the people of California, which is why they will replace her this November with a proven leader in Carly Fiorina," said Fiorina campaign press secretary Andrea Saul.
Recent polls have shown Boxer, who is bidding for a fourth term in the Senate, holds a slight lead over her Republican opponent. Fiorina, the former Hewlett Packard CEO, who was also an economic adviser and surrogate for Sen. John McCain's 2008 presidential bid, beat out her two other rivals in the GOP primary in June.