Which is the world's most populous country to have a Muslim majority of over 85%?

Question

On 25 November 2010, which country held a general election whereby the majority of seats (17 out of 26) in its Legislative Assembly were elected by universal suffrage for the first time?

Answer 1

Indonesia
The populations (2020 figures) and approximate majority percentages are: Indonesia 273,523,615, 86.7%;