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In their eighth debate on Wednesday, Hillary Clinton and Senator Bernie Sanders aggressively hashed out their differences on immigration, health care and college affordability. They often spoke over each other, and there were few light moments as the two faced off during what could be the most important week of the Democratic presidential nomination contest. While they both parried effectively, many commentators and critics thought Mr. Sanders delivered his most confident performance of the campaign, even as Mrs. Clinton had her moments.

“Bernie Sanders: Consistently more precise and energetic than in the most recent debate. Less negative, more natural, more earnest and more on message than his opponent. Clinton’s delegate lead looms large, but he showed why he is inspiring tens of millions of liberals across the country.” — Mark Halperin, managing editor of Bloomberg Politics

“Clinton had two shining moments. In one, she made people laugh. In the other, she offered an unusually reflective glimpse into herself.” — Patricia Mazzei, reporter for The Miami Herald

“On balance, I think it was a draw. That normally means it’s a win for the front-runner, which Clinton still very much is.” — Josh Marshall, editor of Talking Points Memo