Obama’s Lead in Delegates Shifts Focus of Campaign - New York Times

Obama’s Lead in Delegates Shifts Focus of Campaign - New York Times

"Mrs. Clinton’s advisers acknowledged that it would be difficult for her to catch up in the race for pledged delegates even if she succeeded in winning Ohio and Texas in three weeks and Pennsylvania in April. They said the Democratic Party’s rules, which award delegates relatively evenly among the candidates based on the proportion of the vote they receive, would require her to win by huge margins in those states to match Mr. Obama in delegates won through voting."