The highest MAE % in the Gampaha Electoral District and Sri Lanka was in  1989  wherein the United People's Freedom Alliance (founded by Sri Lankan President Maithripala Sirisena in 2019 and still exists now), while the lowest MAE % recorded was in the 2005 Gampaha Electoral District and Sri Lanka election.
The United People's Freedom Alliance (abbreviated UPFA; Sinhala:     Eksath Janatha Nidahas Sandanaya; Tamil:    ) was a political alliance in Sri Lanka founded by former Sri Lankan president Chandrika Kumaratunga in 2004 and dissolved by former Sri Lankan President Maithripala Sirisena in 2019. 
