Hillary Clinton romped through the first three Democratic presidential debates: a clear front- runner with the wind at her back. The going could get a lot rougher in the fourth forum on Sunday, the last before primary voting actually begins. She's taken a lot of incoming recently and not just from Enemy No. 1, Donald Trump, but from inside her tent, too.
For starters, Vice President Joseph Biden gave Bernie Sanders, Clinton's only real rival among Democrats, a big Biden shoulder rub.
In a CNN interview on Monday, he said Sanders was doing a "heck of a job," particularly on the Democrats' signature issue of income inequality, which was "relatively new for Hillary to talk about."
Biden laid it on thick: "Bernie is speaking to a yearning that is deep and real. And he has credibility on it," he added. "Hillary's focus has been other things up to now."
He later tried to clarify by saying her focus was, of course, on "foreign policy" as secretary of state, but still, that hurts.