just a sample:
In post-Saddam Iraq there are three groups capable of organizing themselves to the extent that they can effectively participate in national-based elections. The first is the Ba'ath party of Saddam Hussein, outlawed in the aftermath of the invasion of Iraq in 2003 and driven underground. Thus banned from overt participation, the Ba'athists have formed their own distinctly non-democratic coalition of secular Saddam loyalists, Sunni Islamists and tribalists who resist not only the US-led occupation of Iraq, but also any form of Iraqi government imposed on Iraq by the occupation.
When Paul Bremer signed into law his dictate that banned the Ba'ath Party, he forgot the age-old notion that the enemy has a vote. In this case the enemy was the two-million plus members of the Ba'ath party who were suddenly disenfranchised from any legitimate role in determining the future of Iraq. When combined with the Sunni Islamists and tribalists, the Ba'ath-led coalition comprises a constituency of nearly five million people, a number that while incapable of seizing the reigns of power through an election process based upon majority rule, can and will disrupt any process which it has been frozen out of either through the tyranny of foreign occupation or the tyranny of a non-Sunni majority.
The second group in Iraq capable of immediate political organization is the Kurdish Union, specifically the majority Kurdish Democratic Party (KDP) and the minority Patriotic Union of Kurdistan (PUK). The reality of the union is that it is born of political convenience, given that as recently as 1997 these two factions were engaged in a full-scale civil war with one another. The one thing that unites them is not a free and democratic Iraq, but rather an independent Kurdistan, something that was certified in the January 2005 national election when the Kurds held their own referendum on independence, something over 90 percent of the Kurds in Iraq voted in favor of. The principle focus of the Kurds since that time has been to solidify their hold on the territory they call Kurdistan, and to improve their position politically, militarily and economically.
http://www.alternet.org/blogs/themix/30299