A list of U.S. Senators up for re-election this year and/or retirement next January. This is from the 2018 Congressional Directory, so some entries have changed.
CLASS II.—SENATORS WHOSE TERMS OF SERVICE EXPIRE IN 2021
33 US Senators in this group:
Republicans, 21;
Democrats, 12]
Name Party Residence
Alexander, Lamar …………………………………….. R. Maryville, TN.
Booker, Cory A.1 ……………………………………… D. Newark, NJ.
Capito, Shelley Moore ………………………………. R. Charleston, WV.
Cassidy, Bill …………………………………………….. R. Baton Rouge, LA.
Collins, Susan M. …………………………………….. R. Bangor, ME.
Coons, Christopher A.2 ……………………………… D. Wilmington, DE.
Cornyn, John ……………………………………………. R. Austin, TX.
Cotton, Tom …………………………………………….. R. Dardanelle, AR.
Daines, Steve …………………………………………… R. Bozeman, MT.
Durbin, Richard J. …………………………………….. D. Springfield, IL.
Enzi, Michael B. ………………………………………. R. Gillette, WY.
Ernst, Joni ……………………………………………….. R. Red Oak, IA.
Gardner, Cory ………………………………………….. R. Yuma, CO.
Graham, Lindsey ………………………………………. R. Seneca, SC.
Hyde-Smith, Cindy3 ………………………………….. R. Brookhaven, MS.
Inhofe, James M.4 …………………………………….. R. Tulsa, OK.
Jones, Doug5 ……………………………………………. D. Birmingham, AL.
McConnell, Mitch …………………………………….. R. Louisville, KY.
Markey, Edward J.6 ………………………………….. D. Malden, MA.
Merkley, Jeff ……………………………………………. D. Portland, OR.
Perdue, David …………………………………………… R. Glynn County, GA.
Peters, Gary C. …………………………………………. D. Bloomfield Township, MI.
Reed, Jack ……………………………………………….. D. Jamestown, RI.
Risch, James E. ………………………………………… R. Boise, ID.
Roberts, Pat ……………………………………………… R. Dodge City, KS.
Rounds, Mike …………………………………………… R. Fort Pierre, SD.
Sasse, Ben ……………………………………………….. R. Fremont, NE.
Shaheen, Jeanne ……………………………………….. D. Madbury, NH.
Smith, Tina7 …………………………………………….. D. Minneapolis, MN.
Sullivan, Dan …………………………………………… R. Anchorage, AK.
Tillis, Thom …………………………………………….. R. Huntersville, NC.
Udall, Tom ………………………………………………. D. Santa Fe, NM.
Warner, Mark R. ………………………………………. D. Alexandria, VA.
Footnotes (too long for this post) can be found on page 352 (corresponding page 327 of the printed edition) of this PDF:
https://www.govinfo.gov/content/pkg/CDIR-2018-07-27/pdf/CDIR-2018-07-27.pdf
DSD @ Politicaldog101
One reason that the Democratic Senators up this year look so strong is that they were able to withstand the Republican takeover of the Senate in 2014.
According to Wikipedia’s article on the “2014 United States Senate elections”, the Republicans that year “held all of their seats and gained nine Democratic-held seats. Republicans defeated five Democratic incumbents: Mark Begich of Alaska lost to Dan Sullivan, Mark Pryor of Arkansas lost to Tom Cotton, Mark Udall of Colorado lost to Cory Gardner, Mary Landrieu of Louisiana lost to Bill Cassidy and Kay Hagan of North Carolina lost to Thom Tillis.
The Republicans also picked up another 4 open seats in Iowa, Montana, South Dakota and West Virginia. ”