It's all about location, location, location.
Sen. Hillary Clinton will spend Tuesday night in Kentucky to celebrate what's expected to be a big win in that state's primary. But Sen. Barack Obama won't be in Oregon, even though he's favored to win that state's contest Tuesday.
The Illinois senator will appear at a rally in Iowa, where he kicked off the primary season with a January 3 caucus win -- a victory that helped propel him to Democratic front-runner status.
Iowa is also a swing state -- one President Bush won by just 10,000 votes in 2004, and one the Democrats would love to win this November.
Obama told reporters Sunday that visiting Iowa "was a terrific way to kind of bring things full circle."
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