None that I can think of, but there's a few downballot races where I'd have the incumbent at a disadvantage. Here's my extremely premature predictions (which means these people will likely end up winning reelection if my electoral predictions are precedent lol):
Arizona SoS Michele Reagan: She has had a string of terrible headlines and f*ed up the elections this past year in the primary. Look at the Maricopa County Recorder who was defeated last year (and they got less blame than Reagan!) for how well that is likely to go over in 2018. Leans D.
Missouri Auditor Nicole Galloway: she's an appointee who sits in a state Trump won by 19. I think Dems will have to be winning the Senate race (or come within a point or two) for her to hold on. Likely R.
New Mexico Lands Commissioner Aubrey Dunn: State where Trump is unpopular, he barely won in 2014 against an opponent who's already declared for 2018, and where the D Governor and Senate candidates will probably romp. Leans D.
More bad News for Michele Reagan. She will be primaried by a state senator. A state senator very involved in his states party primarying a statewide official of his party...doesn't happen too often. I had my doubts at first but now im going to say the race is lean D. Especially if Mayor Stanton steps in(hes already filed to run)