Kay Hagan was one of the most vulnerable Democratic senators coming into this election cycle, and Republicans sensed a great opportunity to take a seat away from the Democrats. Yet Thom Tillis, the Republican nominee, hasn’t been able to take advantage and pull ahead. In fact, Hagan has managed to maintain a small but steady lead – including in a new poll by Marist/NBC News that has her leading 44-40%, and a Yougov poll that shows her with a 46-45% lead (when include “leaners”). Hagan had a negative public approval rating in July, with 40% approving and 50% disapproving, and although that has improved somewhat for her, she’s still in negative territory. She’s been helped a lot by mistakes from Tillis. The speaker of the state House of Representatives has had subpar fundraising – caused in part by a summer spent distracted with problems in the state legislature. The legislature itself is pretty unpopular, so being a member of it doesn’t help Tillis. There is still a month left, so we’ll see if Tillis can close the gap before election day.