i was always wondering how American peoples endure Bush and Co. for 8 years, but they did it,
They didn't just endure Bush, they voted him in for a second term. The reason is because the average Republican voter doesn't really understand the agenda of the men who control the Republican Party. The real movers are not the candidates like Bush and Palin. They are only pawns.
The real controllers of the Republican party want a two class system in America - the very rich and the very poor.
This can only be accomplished by destroying the institutions that created the middle class - free public education, unemployment benefits, labor unions, public health departments, regulation of big business, etc. most of which are paid for by taxes. By eliminating taxes, the Republicans can turn the U.S. into a third world country overnight, which they almost succeeded in doing.
They have generally won elections by pandering to whatever right wing cause is popular at the time - evangelicals, opposing abortion, opposing gay marriage, etc. even though the core Republican movers care nothing about these issues. However, they went too far when they selected Mrs. Palin as their candidate. Even mainstream Republicans who were the least bit intelligent couldn't go along with that.