Conversation so far:
When did Edwin Edwards first become governor?
In the election of 1971–1972, Edwin Edwards won the governorship of Louisiana.
What did Edwin Edwards do as a governor?
Edwin Edwards was inaugurated as governor on May 1972. One of his first acts was to call for a constitutional convention to overhaul Louisiana's bulky charter.

Question: What type of constitutional convention?
Self-contained rewrite: What was the constitutional convention Edwin Edwards called for?