Name the incumbent for lost renomination republican hold
CREATE TABLE table_19753079_4 (incumbent VARCHAR, result VARCHAR)
SELECT incumbent FROM table_19753079_4 WHERE result = "Lost renomination Republican hold"
### Context: CREATE TABLE table_19753079_4 (incumbent VARCHAR, result VARCHAR) ### Question: Name the incumbent for lost renomination republican hold ### Answer: SELECT incumbent FROM table_19753079_4 WHERE result = "Lost renomination Republican hold"