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Obama will be one of many candidates in Iowa next week.

(CNN) - Must be the butter cow.

Following attention on Republican candidates this week around the Ames Straw Poll, Democratic presidential candidates will pour into Iowa next week. And like their GOP counterparts, the state fair is a command performance.

Senator Joe Biden starts off the influx with stops all weekend, with stops in 5 cities

Senator Chris Dodd is in Des Moines Monday, beginning a week of appearances across the state.

Former Senator John Edwards Monday launches his "Fighting for One America" bus tour, beginning at his state headquarters and the Iowa State Fair, then traveling across the state all week.

Senator Hillary Clinton's campaign announced she will make appearances in 5 cities Tuesday and Wednesday, including a stop at the state fair.

Governor Bill Richardson Tuesday makes stops on Des Moines, including the state fair, followed by events around the state the rest of the week.

Senator Barack Obama Wednesday starts his "Road to Change" tour across the state, beginning in Cedar Falls and including a stop, where else, at the state fair.

All the Democratic candidates will end up in the same places Saturday and Sunday, attending an AFL-CIO "Workers for a Better America" event in Cedar Rapids Saturday, and a nationally televised debate Sunday morning at Drake University.

Democrats will not have the state to themselves though.

Former New York mayor Rudy Giuliani returns to Iowa on August 15 after skipping the GOP straw poll in Ames on Saturday. He will cross paths with Clinton when both visit the Iowa State Fair in Des Moines on Wednesday.

And, another (likely) Republican candidate makes his first appearance in Iowa this week. Former Senator Fred Thompson, who previously made stops in South Carolina and New Hampshire, will be in Des Moines Friday. He may not have competed in the straw poll, but he still can enjoy the fair.

– CNN Political Desk Managing Editor Steve Brusk