By Paul Bedard, Washington Whispers
Barbara Boxer, the scrappy junior senator from California, is up for re-election to a fourth term in 2010, and she's taking pains to scare off a circling foe by raising lots of money. The potential challenger: former Hewlett-Packard boss and 2008 John McCain adviser Carly Fiorina, who's recovering from a bout with cancer. Boxer's not waiting. She's sent donors at least seven fundraising warnings about the likely Fiorina challenge.
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