re-re-re-elected
Example:
In the presidential elections of the United States of America, Franklin D. Roosevelt was elected in 1932, re-elected in 1936, tri-elected (re-re-elected) in 1940 and quadri-elected (re-re-re-elected) in 1944.
In the presidential elections of the United States of America, Franklin D. Roosevelt was elected in 1932, re-elected in 1936, tri-elected (re-re-elected) in 1940 and quadri-elected (re-re-re-elected) in 1944.