If Trump wins presidency, how many Dem Senators in 2018 lose their seats?

[Heisenberg]

North Dakota.

Worst case scenario for the GOP is losing Arizona, Nevada, Texas, and maybe Utah if a Trumpists is nominated there. If Trump wins this year, I'd say 2018 is D+2(+ AZ, NV, TX; - ND).

If Trump wins, Heithkemp almost certainly wins in ND.

I doubt it. Drew Wrigley or Kelly Schmidt could beat her 51-45.

They could put up Rick Berg again, perennial candidate Duane Sands, or a some dude, and then Heitkamp would easily win reelection.

[Heisenberg]

If Republican Donald Trump wins the presidency in 2016, how will that affect the Democratic Senators who are up for reelection in red and swing states? Can Bill Nelson, Claire McCaskill, Joe Donnelly, Joe Manchin, Jon Tester, Heidi Heitkamp, Sherrod Brown, Bob Casey, Tammy Baldwin, and maybe even Debbie Stabenow (blue leaning Michigan) and Bob Menendez (corrupt Dem in a blue state) hope for a poor approval rating from a President Trump to coast by?

Stabanow isnt losing even in a 2010 repeat.  Republicans couldn't even come close in 2014 in an open seat race with a statewide officeholder.

Terri Lynn Land was a garbage nominee.

True, she was constantly nervous and refused to appear in public. Plus she was out of office for a few years.