Obama's demographic challenge: Could white voters cost him the election?

With polls showing that white voters are leaning more towards Romney, President Obama is trying to  offset that loss by focusing on other groups.

Can the president win the White House without white voters?

OutFront tonight: John Avlon who's been travelling to key battleground states aboard CNN's Election Express.  He's in Winston Salem, North Carolina.

Could Obama's struggles with white voters cost him the election?

The nation's first black president could be in danger of becoming a "one-termer" if he can't convince enough white voters that he deserves another four years in the Oval Office.

For weeks, he's hovered around 40% of white voter support – a level that Democratic presidential candidates have struggled with in the recent past and one that analysts believe Barack Obama must maintain in order to win. At the same time, he has to encourage minority voters to go to the polls and capture 80% of their support.

FULL POST