Anyone with half a brain can criticise Bush and his (mis)handling of Iraq, it has nothing to do with Party politics, just common sense.
The Iraq invasion was a terrible idea, and most Republicans knew it a long time ago. They are finally coming out to criticise the adminstration in mass because of upcoming elections. However, it is pure partisanship that kept them from expressing their criticisms in the past.
This so called democracy we live in is a F-ing joke. The checks and balances written into the constitution are outweighed by party politics. F*%k the parties!