Thank Bush for Hamas - because his administration pushed for the elections - which Hamas won.
Hamas sees itself as the representative of the Palestinian people and, in a sense, they're not totally wrong. Prodded by the George W. Bush administration, the Palestinian Authority held popular elections across the West Bank and Gaza for the Palestinian legislature in 2006. Hamas won a slight majority.
However, Hamas refused to recognize Israel or respect past Palestinian agreements with Israel while in government. Hamas fought a pretty bloody civil war with the more moderate Fatah party over this and de facto seceded from the PA to govern Gaza independently from the West Bank-based leadership.
Today, Hamas and Fatah are closer to reconciling than they've ever been. They signed a agreement to both support an interim government in April, and have agreed to hold national elections in Gaza and the West Bank sometime in the next five months. However, Hamas and Fatah disagree deeply about the current conflict. Hamas has been firing rockets at Israel, while Fatah urges a halt to hostilities. It's not clear whether the joint government can survive the current round of fighting.
Wow it took six whole responses before we got to a blame Bush post that has to be a new record. I also heard that donkeys are requesting weapons from the U.S. to fight this abuse Obama has offered them MRE's instead,