None: AL, AK, AR, DE, ID, IL, KS, KY, LA, MS, MO, MT, NE, NV, NH, ND, OK, SC, SD, TN, UT, WV, WY
Arizona (assuming the two Hispanic CDs are VRA)
Georgia (assuming GA-2 is VRA)
Texas (assuming all current Dem areas are VRA)
Colorado CO-2 flipped in 1974
Connecticut CT-1 flipped in 1958, CT-3 flipped in 1982
Hawaii HI-1 Djou 2010 in a special election - otherwise 1990; HI-2 always Dem - started in 1970 - HI-AL was always Dem since statehood in 1959
Indiana IN-1 flipped in 1930
Iowa Lucas, Monroe, Marion, Mahaska, Keokuk, Jasper flipped in 1996
Maine ME-1 flipped in 1996
Maryland 1990s MD-3 and MD-5 have been Dem since at least 1992, MD-3 likely 1926, MD-5 likely 1974
Minnesota MN-4 flipped in 1948, MN-7 flipped in 1990
New Mexico NM-3 was briefly held by the GOP a special election in 1998, otherwise Democratic since 1982
North Carolina southern half of Orange, far-south Durham County, and some of Wake last flipped in 1996
Ohio parts of OH-9 (1982) and OH-13 (formerly OH-17) (1984)
Oregon OR-3 flipped in 1954, OR-1 and OR-4 flipped in 1974, OR-5 flipped in 1996
Pennsylvania Schuylkill County last flipped in 1962, parts of Montgomery County last flipped in 1998
Rhode Island RI-2 flipped in 1990, RI-1 flipped in 1994
Vermont counting Bernie as a Dem, flipped in 1990
Virginia VA-8 flipped in 1990
Washington 1990s WA-6 (1964), 1990s WA-9 (1996), 1990s WA-1 (1998)
Wisconsin Eau Claire flipped in 1972, rest of WI-3 flipped in 1996, WI-2 flipped in 1998
unsure...can anyone pitch in?
California
Florida
Massachusetts
Michigan
New Jersey NJ-1 flipped in 1974, unknown for NJ-6, 8, 9, 10, 12
New York Buffalo CD (Erie and Niagara), Rochester CD (Monroe), Albany CD (Albany, Schenectady, Saratoga, Montgomery, Rensselaer), Westchester CDs, Nassau CDs, parts of Suffolk (1999); parts of Orange and Dutchess
NJ-06 would have been 1964 (although the district didn't go into Middlesex until 1992, it was basically all of Monmouth and a few towns in Ocean until then).
NJ-08 would have been 1957 when a GOP rep switched parties
NJ-09 was 1996 when Pascrell beat Bill Martini.
NJ-10 was 1948.