Table:
0
A
B
C
D
E
1
Poll Source
Dates administered
Democrat: Jay Nixon
Republican: Kenny Hulshof
Lead Margin
2
Public Policy Polling
November 2, 2008
57.9%
38.4%
19.5
3
Survey USA
November 2, 2008
54%
39%
15
4
Survey USA
October 26, 2008
55%
38%
17
5
Rasmussen Reports
October 14, 2008
57%
38%
19
6
Survey USA
September 23–24, 2008
54%
37%
17
7
St. Louis Post Dispatch/ Research 2000
September 22–24, 2008
49%
42%
7
8
St. Louis Post Dispatch/ Research 2000
September 15–18, 2008
50%
43%
7
9
Rasmussen Reports
September 11, 2008
54%
39%
15
10
Rasmussen Reports
August 7, 2008
53%
42%
11
11
Survey USA
July 29–31, 2008
48%
42%
6
12
Research 2000/ St. Louis Post-Dispatch
July 7–10, 2008
52%
35%
17
13
Rasmussen Reports
July 7, 2008
49%
38%
11
14
Public Policy Polling
July 2–5, 2008
47%
37%
10

Questions and formulas:
Question: Who's the poll source that claimed the Lead Margin was 17 and the Democrat: Jay Nixon had 54% of the votes?
Formula: LET(query1,LET(query1,FILTER(A1:E1,C1="54%"),SUMMARIZE(CHOOSECOLS(query1,1),SUMX(CHOOSECOLS(query1,5)))),FILTER(query1,CHOOSECOLS(query1,2)=17))
Formula2: LET(query1,LET(query1,FILTER(A2:E14,C2:C14="54%"),SUMMARIZE(CHOOSECOLS(query1,1),SUMX(CHOOSECOLS(query1,5)))),FILTER(query1,CHOOSECOLS(query1,2)=17))
Level: hard
Question: What poll source claimed that Republican: Kenny Hulshof had 43%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="43%"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E14,D2:D14="43%"),1))
Level: medium
Question: How many different lead margins were stated in the poll administered on September 11, 2008?
Formula: ROWS(UNIQUE(FILTER(E1, B1="September 11, 2008")))
Formula2: ROWS(UNIQUE(FILTER(E2:E14, B2:B14="September 11, 2008")))
Level: medium
Question: What percentage was claimed that Republican: Kenny Hulshof got in the poll that also claimed Democrat: Jay Nixon got 48%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="48%"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E14,C2:C14="48%"),4))
Level: medium