Lieberman irks Democrats by criticizing Obama

WASHINGTON (AP) - Joe Lieberman is fast becoming the Democrats' public enemy No. 1.

The four-term Connecticut senator, who came tantalizingly close to being Al Gore's vice president in 2000, not only has been campaigning for his pal, presumed Republican nominee John McCain, now he's publicly criticizing the Democrats' standard-bearer, Barack Obama. Lieberman has strayed before, most notably switching from Democrat to independent in 2006 to hold onto his Senate seat after a Democratic primary loss.

But the latest betrayal has upset Democrats, who often answer in clipped but polite tones when asked about Lieberman. The reason: The independent still caucuses with the Democrats on most issues except the Iraq war, and he holds their slim political majority in his hands.