Joe Biden is the Democratic front-runner. And there were moments during Thursday's debate when he looked the part.
Standing between a pair of liberal senators offering radical change, he unabashedly embraced his more moderate position on healthcare, forcefully pressuring Bernie Sanders and Elizabeth Warren to level with Americans about the steep cost of implementing a fully government-run system. He was more polished and practiced than in previous contests.
But the debate was punctuated by moments that highlighted why Biden can't shake questions about his consistency and whispers about his fitness for office, despite his lead in most national polls and early state surveys. Most glaringly: a meandering answer near the end of the debate about his past statements on racial inequality.
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