Table:
0
A
B
C
D
E
1
District
Vacator
Reason for change
Successor
Date successor seated
2
Iowa 5th
Rush Clark (R)
Died April 29, 1879
William G. Thompson (R)
October 14, 1879
3
Ohio 19th
James A. Garfield (R)
Resigned ????, 1880
Ezra B. Taylor (R)
December 13, 1880
4
Missouri 7th
Alfred M. Lay (D)
Died December 8, 1879
John F. Philips (D)
January 10, 1880
5
New York 32nd
Ray V. Pierce (R)
Resigned September 18, 1880
Jonathan Scoville (D)
November 12, 1880
6
New Hampshire 3rd
Evarts W. Farr (R)
Died November 30, 1880
Ossian Ray (R)
January 8, 1881
7
Florida 2nd
Noble A. Hull (D)
Lost contested election January 22, 1881
Horatio Bisbee, Jr. (R)
January 22, 1881
8
North Carolina 1st
Joseph J. Martin (R)
Lost contested election January 29, 1881
Jesse J. Yeates (D)
January 29, 1881

Questions and formulas:
Question: What was the reason for change to the successor that was seated on December 13, 1880?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="December 13, 1880"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,E2:E8="December 13, 1880"),3))
Level: medium