Iowa Democrats pulled off an impressive and important victory in a Southeast Iowa special election this evening, boosting the party’s hopes that 2018 could be a bounce-back year. Democratic veterinarian Phil Miller of Fairfield comfortably defeated Republican farmer Travis Harris of Davis County, 4,021 to 3,324 (about 55% to 45%), thanks largely to a massive victory in his hometown of Jefferson County. That means Democrats will hold on to a key rural swing district that Donald Trump won in November by 22 points.... Miller was about as ideal of a candidate as you could hope for in this race: a...