With 168 delegates at stake on Tuesday, Obama was set to build on the lead that he has gained in the past week in NBC News' delegate count over Clinton, who, according to her aides, is now depending on victories the big states of Ohio and Texas in her struggle to keep up in a race she once commanded.

Clinton's campaign manager resigned over the weekend, and NBC News confirmed Tuesday a Washington Post report that deputy campaign manager Mike Henry resigned Monday. A source told NBC that Henry was leaving to allow new campaign manager Maggie Williams to organize her own team. [SOURCE]

Labels: Barack Obama