Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Results
Candidates
2
Wisconsin 1
Mark Neumann
Republican
1994
Retired to run for U.S. Senate Republican hold
Paul Ryan (R) 57.1% Lydia Spottswood (D) 42.7%
3
Wisconsin 2
Scott Klug
Republican
1990
Retired Democratic gain
Tammy Baldwin (D) 52.5% Josephine Musser (R) 47.4%
4
Wisconsin 3
Ron Kind
Democratic
1996
Re-elected
Ron Kind (D) 71.5% Troy Brechler (R) 28.4%
5
Wisconsin 4
Jerry Kleczka
Democratic
1984
Re-elected
Jerry Kleczka (D) 57.9% Tom Reynolds (R) 42%
6
Wisconsin 5
Tom Barrett
Democratic
1992
Re-elected
Tom Barrett (D) 78.2% Jack Melvin (R) 21.6%
7
Wisconsin 6
Tom Petri
Republican
1979
Re-elected
Tom Petri (R) 92.6% Timothy Farness (T) 7.2%
8
Wisconsin 7
Dave Obey
Democratic
1969
Re-elected
Dave Obey (D) 60.6% Scott West (R) 39.3%

Questions and formulas:
Question: Who were the candidates in district Wisconsin 4?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Wisconsin 4"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,A2:A8="Wisconsin 4"),6))
Level: medium
Question: Who's the incumbent in the district that first elected in 1969?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=1969),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,D2:D8=1969),2))
Level: medium
Question: Who's the incumbent of district Wisconsin 5?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Wisconsin 5"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,A2:A8="Wisconsin 5"),2))
Level: medium