BAGHDAD — When Iraqis were drafting their Constitution in 2005, the parties could not agree on who would control Kirkuk, the prized oil capital of the north. They couldn’t even agree on who lived in Kirkuk, which is claimed by the region’s Kurds, but also by its Turkmen minority and Sunni Arabs. For that matter, they couldn’t even agree on where Kirkuk was  in Tamim, Erbil, or Sulaimaniya Province.

So the Iraqis punted, inserting Article 140, a clause that called for a national census, followed by a referendum on the status of Kirkuk, all to be held by the end of 2007. What followed were a succession of delays, against a backdrop of sectarian violence and warnings that Kirkuk could blow apart the Shiite-Kurdish alliance that has governed Iraq since the Americans invaded.

Massoud Barzani, president of the Kurdish regional government, warned two years ago that if “Article 140 is not implemented, then there will be a real civil war.” He’s still waiting.

But so is the threat of civil war, which lurked quietly in the polling places this weekend as residents of Iraq’s Kurdish-dominated areas voted for their regional president and Parliament. Until the status of Kirkuk is clear, nobody really knows how much power those regional officials can wield within the national government, or even whether the Kurds will want to remain part of Iraq.