Sen. Barbara Boxer's (D-Calif.) campaign used on Friday former Alaska Gov. Sarah Palin's (R) endorsement of GOP opponent Carly Fiorina to fire up Boxer's own base.

Boxer's campaign pointed to Palin's backing for Fiorina this week as a "giant, right-wing seal of approval for Fiorina’s candidacy and could rally significant tea party support to her side."

"It’s just the latest example of the national right-wing focus on capturing this Senate seat," Boxer's campaign said.

While many Republicans have courted Palin's endorsement in contested primaries, the decision by the Boxer campaign to seize on Palin's choice of Fiorina over conservative favorite Chuck DeVore in California's Republican primary represents the extent to which Democrats view the former vice presidential nominee as a lightning rod this election cycle.

Fiorina, a former Hewlett-Packard CEO, faces off against DeVore and former Rep. Tom Campbell (R) in the June 8 Republican primary.