A new poll ranks U.S. Sen. Susan Collins as the least popular senator. The poll, released Thursday by the Morning Consult, found a 42 percent approval rate for Collins and 52 percent disapproval rate among Maine voters surveyed. The fourth quarter ranking represents a 10 percent drop in Collins’ net approval rating. Senate Majority Leader Mitch McConnell, R – KY, ranked as the second least popular senator with 50 percent of Kentucky voters disapproving of his performance. The rankings are based on a survey given to 494,899 registered voters nationwide between Oct. 1 and Dec. 31. Participants could answer whether...