. >> would strom thurmond switched parties and then jesse helms came along, lee atwater came along and republicans took over the leadership of the congress, and whether you agree or not, they had an implicit racial appeal, and that has had a major impact it seems to me in this whole question of polarization, and it shows the party bases. >> absolutely, and i wanted to emphasize that point. i think the changing racial composition of the party coalition, with the democratic coalition and nonwhites becoming a very large share. the democratic party is very heavily dependent on nonwhite votes, and there has been a regional realignment, where the south has become the most republican region of the country and even though obama made some inroads there, it is by far the most republican region of the country, and whereas the northeast which 50 years ago when bob dole was first elected to the senate, the northeast was the most republican region of the country, and now it is by far the most, notwithstanding scott brown, it is the most by far the most democratic region of the country so we have see