Wrong. There is simply a spectrum of political opinion in both parties. And whether we like it or not, the vast majority of Americans are neither to the far right or the far left of the spectrum, but scattered around the middle.
Debatable - assumes a normal distribution. There are those, including myself, that believe the electorate is bimodal and becoming increasingly so. If this is true, the first party to recognize the fact and target their true central tendancy will have a huge strategic advantage.
What's the 'middle'????