I'd add OH-13 to the watch list.
Sherrod Brown is retiring and while this seat has a strong Democrat lean, the GOP is running the mayor of Lorain which is a Democrat stronghold.
I considered adding OH-13 when I did a major revision of my lists a couple weeks ago, but I decided to wait until the race took shape. I haven't had time to look at it since the OH filing deadline and see what's up there. The OH-13 district was 55.23% Kerry in 2004 which certainly isn't impossible for the GOP in an ordinary year with the right candidate, but is certainly daunting.
However, in a year that looks to favor Dems come November, and moreover in which Ohio is caught up in a major GOP scandal with a profoundly unpopular GOP governor and dismal approval ratings for the GOP president, I don't see much justification to expect a competitive race there.
If in the next couple weeks the buzz picks up for the prospective GOP nominee, and especially if viable fundraising gets reported, then I'll move OH-13 on the list.
To be very clear, just because a race isn't on my Watch List doesn't mean I'm not watching it. LOL The Watch List is for races where I think there's a good argument to be made that they are or will become competitive, but that if I had to rate where they stand 'if the election were today' I would rate them as Safe for one or the other party.
It's all subjective of course, but hey, it's my list!