If the country publishes the election (voting) results online, what is the level of aggregation?

Singapore

Answer

Results aggregated at constituency level
National results are published

Source

http://www.eld.gov.sg/elections_past_results_presidential.html#Y2011
http://www.eld.gov.sg/gazette/G_PreP2011/Statement%20of%20the%20Poll.pdf#zoom=100
http://www.eld.gov.sg/gazette_archive_ParE2015.html
http://www.eld.gov.sg/election_results_2015.html