Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
Wisconsin 1
Mark Neumann
Republican
1994
Re-elected
Mark Neumann (R) 51% Lydia Spottswood (D) 49%
3
Wisconsin 3
Steve Gunderson
Republican
1980
Retired Democratic gain
Ron Kind (D) 52% James Harsdorf (R) 48%
4
Wisconsin 4
Jerry Kleczka
Democratic
1984
Re-elected
Jerry Kleczka (D) 58% Thomas G. Reynolds (R) 42%
5
Wisconsin 7
Dave Obey
Democratic
1969
Re-elected
Dave Obey (D) 57% Scott West (R) 43%
6
Wisconsin 8
Toby Roth
Republican
1978
Retired Democratic gain
Jay W. Johnson (D) 52% David Prosser, Jr. (R) 48%

Questions and formulas:
Question: What district first elected in 1978?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=1978),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,D2:D6=1978),1))
Level: medium
Question: What district was incumbent Jerry Kleczka in?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Jerry Kleczka"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="Jerry Kleczka"),1))
Level: medium
Question: How many districts had results related to incumbent Toby Roth?
Formula: ROWS(UNIQUE(FILTER(E1, B1="Toby Roth")))
Formula2: ROWS(UNIQUE(FILTER(E2:E6, B2:B6="Toby Roth")))
Level: medium
Question: Who were the candidates in district Wisconsin 1?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Wisconsin 1"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,A2:A6="Wisconsin 1"),6))
Level: medium