CREATE TABLE table_73140 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Name the incumbent for lost renomination republican hold
SELECT "Incumbent" FROM table_73140 WHERE "Result" = 'Lost renomination Republican hold'
SELECT "Incumbent" FROM "table_73140" WHERE "Result" = 'Lost renomination Republican hold'