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(CNN) – A NBC News/Marist poll found Democratic Sen. Mary Landrieu at 44% support, but in the state's "jungle primary" she's facing two Republicans - Rep. Bill Cassidy and tea party candidate Rob Maness. If Landrieu falls short of 50%, she'd face just one of those Republicans in a December run-off - and without conservatives' votes being split, she'd be the underdog.
CNN's Suzanne Malveaux reports.