Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Results
Candidates
2
Illinois 1
Bobby Rush
Democratic
1992
Re-elected
Bobby Rush (D) 84.1% Jason Tabour (R) 15.9%
3
Illinois 3
Dan Lipinski
Democratic
2004
Re-elected
Dan Lipinski (D) 77.1% Ray Wardingly (R) 22.9%
4
Illinois 4
Luis Gutierrez
Democratic
1992
Re-elected
Luis Gutierrez (D) 85.8% Ann Melichar (R) 14.2%
5
Illinois 5
Rahm Emanuel
Democratic
2002
Re-elected
Rahm Emanuel (D) 78.0% Kevin White (R) 22.0%
6
Illinois 6
Henry Hyde
Republican
1974
Retired Republican hold
Peter Roskam (R) 51.4% Tammy Duckworth (D) 48.6%
7
Illinois 7
Danny Davis
Democratic
1996
Re-elected
Danny Davis (D) 86.7% Charles Hutchinson (R) 13.3%
8
Illinois 9
Jan Schakowsky
Democratic
1998
Re-elected
Jan Schakowsky (D) 74.6% Michael Shannon (R) 25.4%
9
Illinois 10
Mark Kirk
Republican
2000
Re-elected
Mark Kirk (R) 53.4% Daniel Seals (D) 46.6%
10
Illinois 11
Jerry Weller
Republican
1994
Re-elected
Jerry Weller (R) 55.1% John Pavich (D) 44.9%
11
Illinois 12
Jerry Costello
Democratic
1988
Re-elected
Jerry Costello (D) unopposed
12
Illinois 13
Judy Biggert
Republican
1998
Re-elected
Judy Biggert (R) 58.3% Joseph Shannon (D) 41.7%
13
Illinois 14
Dennis Hastert
Republican
1986
Re-elected
Dennis Hastert (R) 59.8% John Laesch (D) 40.2%
14
Illinois 15
Tim Johnson
Republican
2000
Re-elected
Tim Johnson (R) 57.6% David Gill (D) 42.4%
15
Illinois 17
Lane Evans
Democratic
1982
Retired Democratic hold
Phil Hare (D) 57.2% Andrea Lane Zinga (R) 42.8%
16
Illinois 18
Ray LaHood
Republican
1994
Re-elected
Ray LaHood (R) 67.3% Steve Waterworth (D) 32.7%

Questions and formulas:
Question: What is the district when the first elected was in 1986?
Formula: FILTER(A1,D1=1986)
Formula2: FILTER(A2:A16,D2:D16=1986)
Level: easy
Question: Who were the candidates when the first elected was a republican in 1998? 
Formula: FILTER(F1,(D1=1998)*(C1="Republican"))
Formula2: FILTER(F2:F16,(D2:D16=1998)*(C2:C16="Republican"))
Level: easy