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

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'