In the fierce campaign between Sens. Hillary Rodham Clinton and Barack Obama, a battle dominated by questions of race and gender, white men have emerged as perhaps the single critical swing constituency.
The competition for the support of white men, particularly those defined as working class, will shape the showdown between Clinton and Obama in Pennsylvania's Democratic presidential primary on April 22. Obama (Ill.) won majorities among those voters in what appeared to be breakthrough victories in Wisconsin and Virginia last month. But he badly lost working-class white men to Clinton (N.Y.) in Ohio and Texas two weeks ago, keeping the outcome of the Democratic race in doubt indefinitely.
Read HuffPost's coverage of the Pennsylvania primary here.