Mangaldoi was a former Lok Sabha constituency in the Indian state of Assam. After the delimitation, the constituency's area changed, and the name was changed to Darrang–Udalguri. {{Pie chart|caption=Most Successful parties from Mangaldoi Lok Sabha|other=|value1=38|label1=BJP (5 Times)|color1={{party color|Bharatiya Janata Party}}|value2=31|label2=INC (4 Times)|color2={{party color|Indian National Congress}}|value3=15|label3=AGP ( 2 Times)|color3={{party color|Asom Gana Parishad}}|value4=8|label4=Janata Party ( 1 Times)|color4={{party color|Janata Party}}|value5=8|label5=PSP ( 1 Time)|color5={{party color|Praja Socialist Party}}|value6=|label6=|color6=|value7=|label7=|color7= {party color|Independent}} |value8=|label8=|color8=}}

Assembly segments

Mangaldoi Lok Sabha constituency is composed of the following assembly segments:

Current assembly segments

Previous assembly segments

Members of Parliament

Darrang Lok Sabha Constituency(1952–1957) Mangaldoi Lok Sabha Constituency(1957–2024) Darrang-Udalguri Lok Sabha Constituency(2024–present)

Election results

2024

2019

General election 2014

General election 2009