Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
Elected
Status
Opponent
2
Illinois1
Charles Hayes
Democratic
1983
Re-elected
Charles Hayes (D) 93.8% Babette Peyton (R) 6.2%
3
Illinois2
Gus Savage
Democratic
1980
Re-elected
Gus Savage (D) 78.2% William T. Hespel (R) 21.8%
4
Illinois3
Marty Russo
Democratic
1974
Re-elected
Marty Russo (D) 70.9% Carl L. Klein (R) 29.1%
5
Illinois6
Henry Hyde
Republican
1974
Re-elected
Henry Hyde (R) 66.7% Robert J. Cassidy (D) 33.3%
6
Illinois7
Cardiss Collins
Democratic
1973
Re-elected
Cardiss Collins (D) 79.9% Michael Dooley (R) 20.1%
7
Illinois9
Sidney R. Yates
Democratic
1964
Re-elected
Sidney R. Yates (D) 71.2% Herb Sohn (R) 28.8%
8
Illinois15
Edward Rell Madigan
Republican
1972
Re-elected
Edward Rell Madigan (R) unopposed
9
Illinois17
Lane Evans
Democratic
1982
Re-elected
Lane Evans (D) 66.5% Dan Lee (R) 33.5%
10
Illinois20
Dick Durbin
Democratic
1982
Re-elected
Dick Durbin (D) 66.2% Paul Jurgens (R) 33.8%

Questions and formulas:
Question: What party was Lane Evans?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Lane Evans"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,B2:B10="Lane Evans"),3))
Level: medium
Question: What district had elections in 1964?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1=1964),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,D2:D10=1964),1))
Level: medium
Question: Who was Henry Hyde's opponent in the race?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Henry Hyde"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,B2:B10="Henry Hyde"),6))
Level: medium
Question: What Republican incumbent was elected in 1974?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(D1=1974)*(C1="Republican")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,(D2:D10=1974)*(C2:C10="Republican")),2))
Level: medium