CREATE TABLE table_767 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Result" CLOB, "Candidates" CLOB)

Name the first elected for lost renomination democratic loss
SELECT "First elected" FROM table_767 WHERE "Result" = 'Lost renomination Democratic loss'
SELECT "First elected" FROM "table_767" WHERE "Result" = 'Lost renomination Democratic loss'