2016 US Senate Election- most to least vulnerable Democratic and Republican held seat.

Democratic held seat.
1)NV(OPEN-Reid-D)
Against Sandoval-R(Lean Republican)
Against Heck-R(Lean Democratic)
2)CO(Bennet-D)
Lean Democratic
3)WA(Murray-D)
Likely Democratic
4)CA(OPEN-Boxer-D)
Solid Democratic
5)CT(Blumenthal-D)
Solid Democratic
6)OR(Wyden-D)
Solid Democratic-D
7)MD(OPEN-Mikulski-D)
Solid Democratic
8)NY(Schumer-D)
Solid Democratic
9)HI(Schatz-D)
Solid Democratic
10)VT(Leahy-D)
Solid Democratic
-1D(NV-assuming Sandoval-R runs)
Republican held seats
1)WI(Johnson-R)
Lean Democratic
2)IL(Kirk-R)
Lean Democratic
3)FL(OPEN-Rubio-R)
Tossup
4)NH(Ayotte-R)
Tossup
5)OH(Portman-R)
Tossup
6)PA(Toomey-R)
Tossup
7)NC(Burr-R)
Lean Republican
8)AZ(McCain-R)
Lean Republican
9)IN(OPEN-Coats-R)
Lean Republican
10)MO(Blunt-R)
Likely Republican
11)IA(Grassley-R)
Solid Republican
12)GA(Isakson-R)
Solid Republican
13)AK(Murkowski-R)
Solid Republican
14)AR(Boozman-R)
Solid Republican
15)KS(Moran-R)
Solid Republican
16)KY(Paul-R)
Solid Republican
17)LA(Whoever Vitter appoints-R)
Solid Republican
18)SC(Scott-R)
Solid Republican
19)AL(Shelby-R)
Solid Republican
20)OK(Lankford-R)
Solid Republican
21)UT(Lee-R)
Solid Republican
22)ID(Crapo-R)
Solid Republican
23)ND(Hoeven-R)
Solid Republican
24)SD(Thune-R)
Solid Republican
Democrats hold onto NV and CO,pick up WI,IL,FL,and OH or WI,IL,NH and PA.
Democrats hold onto CO,pick up WI,IL,FL,NH and PA or WI,IL,OH,NH and PA