We turn to the race for president. And it's your voice, your vote and countdown on. Election day just 79 days away and this evening here one week to go to the republican national convention. Look at... See More
We turn to the race for president. And it's your voice, your vote and countdown on. Election day just 79 days away and this evening here one week to go to the republican national convention. Look at the time lapse video, you see they are getting ready in tampa, transforming the stadium, into the convention hall from the romney/ryan ticket will be nominated and among the voters they hope to convince, undecideds, small yet powerful group of american voteders who could make a difference. You'll hear from some of them in just a moment but first, the campaign trail, and with the clock ticking we ask tonight for the romney/ryan ticket, this debate about medicare really what they want to be talking about? Here is abc's david kerley now. Reporter: Republican sources tell abc news that as of tonight, they're planning to open up their convention in tampa with mitt romney's partner, his wife, ann romney, who has been taking the mike We're not going to take it anore. We're taking the white house back. Reporter: Ann romney was with her husband this sunday as they attended church in new hampshire. The current resident of the white house walked to church with his family. While they were all praying, their surrogates were talking out one thing -- medicare. Medicare. Medicare. Reporter: Why so much chatter about medicare before the convention? Because for the first time in a long time, republicans have a hammer. The president's plan to use $700 billion from medicare to help pay for health care reform. There was ryan with his mom in front of florida seniors. Medicare should not be used as a piggy bank for obama care. Medicare should be the promise that is made to our current seniors, period, end of story. Reporter: Many democrats and even some republicans have questioned this strategy. Why concentrate on medicare? The president seems to have an answer. I guess they figure the best defense is to try to go on offense. Reporter: They do. And romney's top spokesman thinks it's working. This is the first election cycle I can remember in a long time where democrats are on the defensive because of medicare. Reporter: Going on offense, attempting to neutralize concerns about paul ryan all before the convention now a little more than a week away. They want to go on tampa on their toes and to pivot from the offense on to the broader argument, a referendum on president obama's handling of the economy. Reporter: Romney's week before the convention including a stop in new orleans. The president is back on the campaign trail tuesday and wednesday in two battleground states, ohio and nevada. And david, expect to hear that one word again this week, medicare. We'll be on the trail with both sides first thing this week. David kerley, thank you. As I mentioned, undecideds in this country, americans who have yet to make up their minds, smaller group than ever and perhaps more powerful, too, with polling showing the race in a dead heat, people who haven't made up their mind represent about 6% of the voters. Which means they could make a difference. Right through november we'll check in with them. What do they still need to hear? You are the undecideds. Meet patrick and taylor of ohio, husband and wife, children at home and for patrick -- what are you still waiting to hear? I'm sick of hearing all of the attacks, for me, the fiscal cliff is very startling to me and very scary. And I want to hear definite ways of how they'll fix it now. Reporter: The paul ryan pick does it help you make up your mind? It does. It does. To be honest with you, I need to learn more about his plan but i like to hear he has a plan. Reporter: His wife works in health care and she's unsure of talk about changing medicare and repealing the president's health care law before the country can see what it can actually do for americans. Will the two of you vote for the same person? Well, in past we've both voted the same way but if he wants to go one way and I go the other it's his opinion and it's Reporter: And amy turner, also concerned about mitt romney and paul ryan's talk of changing medicare, even with their promise that it won't affect anyone 55 and older. Medicare concerns you? Yes. Reporter: What concerns you the most about it? Well, I'm not old enough for medicare yet but I'm getting there, it will be another year and I will be eligible. The way medicare has worked for others I have talked to, he needs to leave it alone. Reporter: Dave is undecided. This landscaper, husband, father of two does like the tough talk he is hearing so far from the romney/ryan ticket. What do you want to hear? I want to hear the truth, even how painful it is and hear we're getting better and somebody with a plan to do that and not waste money on extraneous things we don't need right now. Just a few of the undecides in the race. If you're one send us a note on twitter, send me a message on facebook. We'll check with you through november. We move to a consumer alert.
This transcript has been automatically generated and may not be 100% accurate.