EUGENE, Ore. (AP) -- The campaign of Democrat presidential candidate Barack Obama says he'll mark the latest round of primary voting with a rally in Iowa.
The Tuesday night event will mark a return to the state where Obama's solid win in January caucuses propelled him to his status as the front-runner.
Obama is campaigning today for primaries Tuesday in Oregon and Kentucky.
Rival Hillary Rodham Clinton has a strong lead in polls in Kentucky, but Obama has the advantage in Oregon.
Obama has built a solid lead in Democratic National Convention delegates over Clinton, and is working overtime to cast an image of inevitability to his campaign for the nomination.
In recent days, he's spent more time focused on his differences with certain Republican nominee John McCain than sparring with Clinton.