Who gets hurt more by this headline?

Brownback and Biden unlikely allies on Iraq

Biden rival at the next debate: “I ask my fellow Democrats, how much can we trust the judgment of Senator Biden if his Iraq plan has been endorsed by an arch-conservative Republican like Sam Brownback?”

Brownback rival at the next debate: “I ask my fellow Republicans, how much can we trust the judgment of Senator Brownback if his plan has been endorsed by a liberal Democrat like Joe Biden?”