political raincheck. abc news has learned that mitt romney will arrive in tampa today, two days earlier than expected. speaker of the house john boehner is already there where he spoke to diane sawyer about the challenges ahead for medicare. >> republicans have been forthright about the need to fix medicare. and our colleagues across the aisle want to be critical of us. but they have no plan. they have put nothing on the table to help fix medicare. so they want to have this debate, let's have it. >> a speech by mitt romney's wife ann expected to be the highlight this evening. >> republicans want the fight with medicare. surprisingly according to some new numbers out there, folks in florida, one of the crucial swing states, they still favor obama's plan with medicare as opposed to the romney and ryan. i almost said paul. >> seniors down there. a really big issue. particularly in florida. >> this is mitt romney's chance to get his message out there. hoping he gets a nice swing. typically after the conventions