Nearly six months after the Democratic Party approved President Joe Biden’s plan to overhaul which states lead off its presidential primary, implementing the revamped order has proven anything but simple. New Hampshire is in open rebellion. South Carolina and Nevada are on board but have faced stiff Republican pushback. In Michigan, compliance may mean having to cut the state legislative session short, despite Democrats controlling both chambers and the governor’s mansion. And then there’s Iowa, which is looking for ways to still go first without violating party rules. Party officials expect the process to continue through the end of the year — even as the 2024 race heats up all around it.