Complex sentence: He returned to the judiciary in Pennsylvania's Eighth District in 1850 and was nominated by the Whig Party for the governor's race in 1854, amid controversy surrounding the Kansas-Nebraska Act.
Split into simpler sentences: He returned to the judiciary in Pennsylvania's Eighth District in 1850. Pollock was nominated by the Whig Party for the governor's race in 1854, amid controversy surrounding the Kansas-Nebraska Act.