when looking at how they voted for president:
Person A:
1924 Coolidge
1928 Hoover
1932 Hoover
1936 Lemke
1940 Wilkie
1944 Dewey
1948 Dewey
1952 Eisenhower
1956 Eisenhower
1960 Nixon
1964 Goldwater
1968 Wallace
1972 Schmitz
1976 Ford
1980 Reagan
1984 Reagan
Very conservative Republican. Residing probably in something like Missouri or Kansas. Most likely Protestant. Unsure of ethnic background.
Person B:
1924 LaFollette
1928 Smith
1932 Roosevelt
1936 Roosevelt
1940 Roosevelt
1944 Roosevelt
1948 Wallace
1952 Stevenson
1956 Stevenson
1960 Kennedy
1964 Johnson
1968 Humphrey
1972 McGovern
1976 Carter
1980 Anderson
1984 Mondale
Very liberal Democrat. Probably resides in Minnesota, Massachusetts, Chicago, or NYC. I'd say probably an Irish Catholic, or maybe a Scandinavian.
Could have gone many ways with the specifics, but these are my best hypotheses.