The Republican Party, with its extreme right wing taking hold of the party, are only insuring their ultimate defeat in many Congressional races and in the race for the Presidency.
It can be assured that a vast majority of the following voting blocs will NOT vote Republican:
Women
African Americans
Hispanics and Latinos
Labor
Gays and Lesbians
Jews
White Collar College Educated Middle Class
Independents
Of course, SOME people in these different categories will vote Republican, but with a strong majority alienated by the extremism of the GOP, the Democrats will win the majority, often very strong majority, of these groups.
Barack Obama has not pleased everyone with all of his policies, but again, the election is a choice between alternatives, not perfection of anyone. There is no question that the Republican Party is committing political “suicide”, the only good thing about this for them being that it will force them to move back to the center of American politics in the future, or be repudiated and replaced by a new “centrist” party in the mainstream of America!