Senate Showdown 2018: 12 Important Races to Watch August 30, 2018 Cannabistical Off Beto O'RourkeBill NelsonBob Casey JrClaire McCaskillDebbie StabenowDomestic NewsFresh off the PressHeidi HeitkampJacky RosenJoe DonnellyJoe ManchinJohn TesterKyrsten SinemaLaw & Politicsmarijuana newsMidtermsNewsnews about marijuanaPhil BredesenRick ScottSenate Races 2018Senate ShowdownSherrod BrownTammy BaldwinTed CruzUS by State With the Republicans’ 51-49 edge in the Senate, the Democrats need to gain at least…