CREATE TABLE table_18486 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

how many party with candidates being john m. vorys (r) 61.5% jacob f. myers (d) 38.5%
SELECT COUNT("Party") FROM table_18486 WHERE "Candidates" = 'John M. Vorys (R) 61.5% Jacob F. Myers (D) 38.5%'
SELECT COUNT("Party") FROM "table_18486" WHERE "Candidates" = 'John M. Vorys (R) 61.5% Jacob F. Myers (D) 38.5%'