Conversation so far:
When did Frank Church become involved in politics?
Frank Church became involved in politics in 1952
How was Frank Church involved in politics?
Frank Church became an active Democrat in Idaho and after an unsuccessful try for the state legislature in 1952, he ran for the U.S. Senate in 1956.
Was Frank Church a republican?
No, Frank Church was Democratic

Question: How old was he when he ran for U.S. Senate ?
Self-contained rewrite: How old was Frank Church when he ran for U.S. Senate ?