These first two graphs should be transposed:

BAGHDAD, Iraq – Gunmen killed a Sunni Arab candidate for parliament and militants tried to blow up a leading Shiite politician in separate attacks Tuesday, the last day of campaigning for Iraq’s election.

More than 1,000 Sunni clerics, meanwhile, issued a religious edict, or a fatwa, urging Sunni Arabs to vote in Thursday’s balloting — offering a seal of approval as members of the disaffected minority are expected to turn out in large numbers after mostly boycotting the landmark Jan. 30 polls.

The second paragraph is much more important than the first.