CREATE TABLE table_72396 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Name the first elected for abner j. mikva
SELECT "First elected" FROM table_72396 WHERE "Incumbent" = 'Abner J. Mikva'
SELECT "First elected" FROM "table_72396" WHERE "Incumbent" = 'Abner J. Mikva'