ISLAMABAD (AP) — Pakistan is electing a new parliament on Thursday as surging militant attacks and cries of foul have cast a shadow over the vote and deep political divisions make a coalition government seem more likely. The election comes at a critical time for this nuclear-armed nation, an unpredictable Western ally bordering Afghanistan, China, India and Iran — a region rife with hostile boundaries and tense relations. Pakistan's next government will face huge challenges, from containing unrest, overcoming an intractable economic crisis to stemming illegal migration.