col : unnamed: 0 | 1948 | 1952 | 1956 | 1960 | 1964 row 1 : all voters | 50.0 | 45.0 | 42 | 50 | 61 row 2 : white | 50.0 | 43.0 | 41 | 49 | 59 row 3 : black | 50.0 | 79.0 | 61 | 68 | 94 row 4 : college educated | 22.0 | 34.0 | 31 | 39 | 52 row 5 : high school educated | 51.0 | 45.0 | 42 | 52 | 62 row 6 : grade school educated | 64.0 | 52.0 | 50 | 55 | 66 row 7 : professional & business | 19.0 | 36.0 | 32 | 42 | 54 row 8 : white collar | 47.0 | 40.0 | 37 | 48 | 57 row 9 : manual worker | 66.0 | 55.0 | 50 | 60 | 71 row 10 : farmer | 60.0 | 33.0 | 46 | 48 | 53 row 11 : union member | 76.0 | nan | 51 | 62 | 77 row 12 : not union | 42.0 | nan | 35 | 44 | 56 row 13 : protestant | 43.0 | 37.0 | 37 | 38 | 55 row 14 : catholic | 62.0 | 56.0 | 51 | 78 | 76 row 15 : republican | nan | 8.0 | 4 | 5 | 20 row 16 : independent | nan | 35.0 | 30 | 43 | 56 row 17 : democrat | nan | 77.0 | 85 | 84 | 87 row 18 : east | 48.0 | 45.0 | 40 | 53 | 68 row 19 : midwest | 50.0 | 42.0 | 41 | 48 | 61 row 20 : west | 49.0 | 42.0 | 43 | 49 | 60 row 21 : south | 53.0 | 51.0 | 49 | 51 | 52
what are all the voting demographics? of these groups, which voted the least in 1956?
republican
Unnamed: 0 1948 1952 1956 1960 1964
of these groups, which voted the least in 1956?
all voters 50.0 45.0 42 50 61
White 50.0 43.0 41 49 59
Black 50.0 79.0 61 68 94
College educated 22.0 34.0 31 39 52
High School educated 51.0 45.0 42 52 62
Grade School educated 64.0 52.0 50 55 66
Professional & Business 19.0 36.0 32 42 54
White Collar 47.0 40.0 37 48 57
Manual worker 66.0 55.0 50 60 71
Farmer 60.0 33.0 46 48 53
Union member 76.0 nan 51 62 77
Not union 42.0 nan 35 44 56
Protestant 43.0 37.0 37 38 55
Catholic 62.0 56.0 51 78 76
Republican nan 8.0 4 5 20
Independent nan 35.0 30 43 56
Democrat nan 77.0 85 84 87
East 48.0 45.0 40 53 68
Midwest 50.0 42.0 41 48 61
West 49.0 42.0 43 49 60
South 53.0 51.0 49 51 52
Republican
of these groups, which voted the least in 1956? || what are all the voting demographics?