My husband is a republican (the old northeast variety) and doesn't get that they are no longer that party. Fiscal conservatives? Ha! No evidence as far as I am concerned.But the perception continues.  He seriously thinks that McCain is different than Bush and is some kind of independent. That is why I was surprised when he told me about watching  the O'Reilly interview and being extremely impressed. He told me that he thinks Hillary did herself a lot of good. He said that even when O'Reilly threw awful questions at her she calmly held her own and even managed to put him in place and show how wrong he was. He also drew the distinction about how she looked compared to how Obama looked when he was asked the same type of stupid question in the PA debate. There was no whining.  The difference was like night and day he said. I don't know that he would actually consider voting for Hillary instead of McCain but it sure opened up his mind to that possibility. 
That is why Hillary can win in November and Obama can't. Obama won't get those Reagan democrats (or most working class democrats) and we can't win without them. We saw this directly in Texas. Hillary won the general and Obama could come in and take it away only in the precinct conventions where it can be controlled by a few enthusiastic supporters. Obama then won the Wyoming caucuses, but out of 100,000 registered democrats only 8000 actually participated. All the new enthusiasm for registering and voting in these primaries is widely seen as enthusiasm for Obama. It is not. It is because for the first time these states actually count to pick the democratic presidential nominee. Am I dismissing the obvious enthusiasm that Obama generates? No. I am simply pointing out that it will not be enough in the general. 
If democrats want another John Kerry pick Obama. If they want to beat McCain, pick Hillary. It is that simple.