Dan Mongiardo (D): 45 (39)
Jack Conway (D): 27 (28)
Others: 9 (18)
Undecided: 19 (16)
(MoE: 4.1%)
Interestingly, SUSA finds that the top choices of both party committees are in a serious struggle to emerge from their respective primaries. Grayson and Paul have already been engaging in an air war, with Grayson leveling some sharp blows against Paul over his shocking anti-coal rhetoric on the campaign trail. Amazingly, Grayson's attacks aren't seeming to make much of a dent in Paul's progress, but given the lack of public polling of these primaries over the past few months, I suppose it's possible that Paul sported an even bigger lead a month ago.
Meanwhile, the Democratic candidates are just starting to loosen their purse strings ever so slightly, going up with their first ads recently. Conway has a bigger supply of resources at his disposal, but he also a significant amount of ground that he needs to gain. Mongiardo is beating him handily in all regions of the state, except for Louisville (where Conway has a modest 42-34 lead). Hopefully, SUSA will be contracted to poll these races with greater frequency over the next couple of months.
In the past, SUSA used to offer up general election head-to-heads on this race. Unfortunately, they seem to have abandoned the concept and have instead elected to test the "Democratic Candidate" against the "Republican Candidate", finding a 43-42 point race in favor of the undefined Republican. Those numbers aren't bad, but Democrats will have to find a way to paint Paul as too weird for Kentucky in order to buck the national trend.