From Egypt's 2014 constitutional referendum:
Unofficial results Thursday indicated that Egypt’s new constitution was approved by about 98% of voters, a lopsided margin reminiscent of elections that were held prior to the uprising against Hosni Mubarak three years ago.
From Chiles 1980 constitutional referendum:
Even adjusting for population growth, the reported 1980 vote total implies a completely unprecedented 91% participation rate by all registered voters (p. 23).
Egypt, welcome to Chile's authoritarian past.