A new poll has found that Democrats and Republicans are neck and neck in the upcoming midterm elections, with Democrats citing gun violence as their number one concern even as the economy continues to tumble. The Sienna College Research Institute poll, conducted on behalf of the New York Times between July 5 and 7 among 849 registered voters, found the race to control Congress is tight, with voters preferring Democrats to Republicans by just one percentage point, 41%-40%. Nineteen percent of respondents remain undecided. However, among likely voters, the Times noted that 44% favored Republicans while 43% expressed support for...