Article: Obama checks out market; Sharpens his message of change, jabs at Clinton as caucuses near

"You want to make a good closing argument," Barack Obama is saying Wednesday, explaining why he is sharpening and retooling his stump speech, bolstering his message of change and methodically working to portray Hillary Rodham Clinton as secretive and anything but a change agent.

The Illinois senator is commenting about the tight Democratic race in a Hy-Vee grocery store, his first visit to a food store since he started his presidential run almost a year ago. He shook hands and visited with surprised shoppers, asking them for their caucus vote.

"It actually feels pretty good," he said as he picked a container of cut-up watermelon from a cooler shelf at the grocery store here, paying ...

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