Obama and Clinton neck and neck

So I get washington post emails everday, and the latest polls say Clinton leads in Ohio, 50 to 43 %, Obama! wow, good job Clinton, finally getting something. Actually Ohio is were my brother and sister in law live, so i have a feelin they might vote for Clinton, because i parents did in MD polls... but i dont know specfically why.. maybe they like her economy plan, which seems to be her stregnth. In Texas, clinton barely has a winnig prediction in polls of 48% and Obama 47%.. maan that is close, eeks.. thats when you got to campaign galore. She seems to be be a lead for most hispanics in Texas, which might be the reason they predict that 1% lead. Unfortunetly for CLinton, wining these two latest states still wont be good enough to beat out all the states Obama has won.. it helps a lot, but still she needs to do some serious campaigning, and convice a lot of people, inorder to get a tighter grasp and better chance, to beat Obama. Well they have until march 4 i believe, is the offical day Ohio and Texas vote? Bill even said that it is vital for Hillary to win Ohio and Texas, because that will then keep her in the race for nomination. Democrates are split between the two because they all want an experienced candidate who can bring real change and progress, which is most likely thought to be Hillary, but they also find that Obama will be a good president who will fufil the needs and would bring the most change in Washington. For this exact reason i was not sure who i was going to vote for back in the MD elections, its such a tough choice, because i think they are both great candidates who will get a lot done. A lot of what the demographics is in each state, is what will be the big counter for who will win each state. (like any other election). Oh man this election process has been crazy. Its such a close race, its like you never know whats gonna happen each time!
Oh what about the supposed affair McCain had? Does that seem to be affecting his campaign? Can someone tell me more about that becasue i just heard about it and therefore do not know whats going on with that and the rublican votes.