Politicking in his boyhood home, President Barack Obama told supporters Monday that everything they worked for and that the country stands for is on the line in his 2012 re-election bid, warning of a bleak America should a Republican win.

At ease in Hawaii, where he was born and vacations each year, Obama sprinkled his standard campaign speech with personal memories and called himself the "hometown kid." But his message turned urgent in trying to get his backers to think of the next election as a choice between a vision of a big country of opportunity or one where regular people lose their voice.

"You kept up the fight for change long after the election was over, and that should make you proud," Obama said inside a lush resort on the western side of Oahu. "It should make you hopeful. But it can't make you satisfied."