Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
Louisiana 1
F. Edward Hebert
Democratic
1940
Re-elected
F. Edward Hebert (D) Unopposed
3
Louisiana 2
Hale Boggs
Democratic
1946
Re-elected
Hale Boggs (D) 55.0% David C. Treen (R) 45.0%
4
Louisiana 4
Joe Waggonner
Democratic
1961
Re-elected
Joe Waggonner (D) Unopposed
5
Louisiana 5
Otto Passman
Democratic
1946
Re-elected
Otto Passman (D) Unopposed
6
Louisiana 7
T. Ashton Thompson
Democratic
1952
Re-elected
T. Ashton Thompson (D) Unopposed

Questions and formulas:
Question: How many parties won the election in the Louisiana 5 district?
Formula: ROWS(UNIQUE(FILTER(C1, A1="Louisiana 5")))
Formula2: ROWS(UNIQUE(FILTER(C2:C6, A2:A6="Louisiana 5")))
Level: medium
Question: How many candidates were elected in the Louisiana 4 district?
Formula: ROWS(UNIQUE(FILTER(D1, A1="Louisiana 4")))
Formula2: ROWS(UNIQUE(FILTER(D2:D6, A2:A6="Louisiana 4")))
Level: medium
Question: Who was the winner in the Louisiana 7 district?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="Louisiana 7"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,A2:A6="Louisiana 7"),2))
Level: medium