DES MOINES — Texas Governor Rick Perry plans to be in Iowa next Tuesday, when President Obama visits the state, in hopes of establishing a one-to-one contrast between one of the nation’s most successful governors and an incumbent president sliding in the polls.

Perry announced this week that he plans to come to Iowa on Sunday, the day after the Ames Republican Straw Poll.  Perry’s motive for coming is at least two-fold.  One, he obviously wants to include Iowa in his first trip as a semi-official candidate; Perry reportedly plans to “make clear” his intention to run during an appearance in South Carolina on Saturday.