Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Results
Candidates
2
Wisconsin 1
Paul Ryan
Republican
1998
Re-elected
Paul Ryan (R) 66% Jeffrey Thomas (D) 34%
3
Wisconsin 2
Tammy Baldwin
Democratic
1998
Re-elected
Tammy Baldwin (D) 51% John Sharpless (R) 49%
4
Wisconsin 3
Ron Kind
Democratic
1996
Re-elected
Ron Kind (D) 64% Susan Tully (R) 36%
5
Wisconsin 5
Tom Barrett
Democratic
1992
Re-elected
Tom Barrett (D) 78% Jonathan Smith (R) 22%
6
Wisconsin 6
Tom Petri
Republican
1979
Re-elected
Tom Petri (R) 65% Dan Flaherty (D) 35%
7
Wisconsin 7
Dave Obey
Democratic
1969
Re-elected
Dave Obey (D) 63% Sean Cronin (R) 37%
8
Wisconsin 8
Mark Green
Republican
1998
Re-elected
Mark Green (R) 75% Dean Reich (D) 25%

Questions and formulas:
Question: Who were the candidates in the district first elected in 1998 whose incumbent ended up being Paul Ryan?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(D1=1998)*(B1="Paul Ryan")),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,(D2:D8=1998)*(B2:B8="Paul Ryan")),6))
Level: medium
Question: Who ran in the district elections won by Tom Petri?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Tom Petri"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,B2:B8="Tom Petri"),6))
Level: medium
Question: When was the first election in the district whose incumbent is Ron Kind?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Ron Kind"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,B2:B8="Ron Kind"),4))
Level: medium
Question: What year was the first election in the district whose election now was won by Ron Kind?
Formula: MINIFS(D1,B1,"Ron Kind")
Formula2: MINIFS(D2:D8,B2:B8,"Ron Kind")
Level: easy