Question: Who are the candidates when the incumbent is John Pegram?
SQL: SELECT "Candidates" FROM "1-2668336-24" WHERE "Incumbent" = 'John Pegram';

Question: Who are the candidates for district Virginia 12?
SQL: SELECT "Candidates" FROM "1-2668336-24" WHERE "District" = 'Virginia 12';

Question: What is the result when the candidates are Alexander Smyth (DR) 100%
SQL: SELECT "Result" FROM "1-2668336-24" WHERE "Candidates" = 'Alexander Smyth (DR) 100%';

Question: How many times is the candidates Charles F. Mercer (F) 100%?
SQL: SELECT COUNT("Incumbent") FROM "1-2668336-24" WHERE "Candidates" = 'Charles F. Mercer (F) 100%';