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Anger surrounding Donald Trump's presidential campaign reached a boiling point in Chicago Friday night.
Both Democratic campaigns are making a pre-primary push in Oklahoma before the polls open Tuesday morning.
Senator Bernie Sanders was rallying for votes in Tulsa Wednesday night. New poll numbers show he is catching up to Hillary Clinton in Oklahoma.
Thirty-five percent of Republican primary voters support Trump, up 13 points since October, and his highest level of support in CBS News polling.