Table: senate_96_election
Columns: d_41_o
d_42_o
d_43_o
d_44_o
d_45
r_55
r_54
r_53
r_52_o
r_51_o

Question: Which R 51 O value corresponds to a D 42 O value of r 19?
SQL: SELECT "r_51_o" FROM senate_96_election WHERE "d_42_o" = 'r 19'

Question: What is the value of D 43 O that has a corresponding R 53 + value of r 8?
SQL: SELECT "d_43_o" FROM senate_96_election WHERE "r_53" = 'r 8'

Question: What is the value of D 42 O that has an R 53 + value of r 8?
SQL: SELECT "d_42_o" FROM senate_96_election WHERE "r_53" = 'r 8'