This list of potential candidates for the /2018 election is highly speculative and contains names that have been mentioned as either publicly or privately considering candidacies, or worthy of consideration as candidates or recruiting prospects by the parties or interest groups. The numerical key indicating our assessment of each person's likelihood of running is obviously important, given the "long and dirty" nature of this list, which will be updated each week. (1) Announced candidacy or certain to run; (2) Likely to run; (3) Maybe; (4) Mentioned but unlikely * = Indicates Potential Retirement Current Senate Lineup: 46 Democrats 54 Republicans 2 Independents/ Other Parties
ArizonaRating: Lean Republican Last Incum. Percentage: 49.7% 2016 Winner: Trump 49.5%
Democrats Republicans Sen. Jeff Flake Kelli Ward, frmr. st. Sen., ’16 U.S. Sen. cand. (1)
California
Rating: Solid Democratic Last Incum. Percentage: 61.6% 2016 Winner: Clinton 61.5%
Democrats Republicans Sen. Dianne Feinstein
Connecticut
Rating: Solid Democratic Last Incum. Percentage: 55.2% 2016 Winner: Clinton 54.5%
Democrats Republicans Sen. Chris Murphy
Delaware
Rating: Solid Democratic Last Incum. Percentage: 66.4%
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