Barack Obama’s favorability ratings among white women have significantly depreciated in recent months, particularly among Democrats and independents, posing an immediate obstacle for the likely Democratic nominee as he moves to shore up his party’s base. According to a new report by The Pew Research Center for the People & the Press, half of white women now have a negative perception of Obama. Forty-nine percent of white women view Obama unfavorably, while only 43 percent hold a favorable opinion. In February, 36 percent of these women viewed Obama unfavorably while 56 percent had a positive perception of the likely Democratic...