He won the polls by a margin of 6979 votes.
Counting of votes was held on Tuesday at Mawkyrwat in South West Khasi Hills district.
UDP candidate Pius Marweiñ got 13793 votes while his nearest rival Congress candidate Jotin Khardewsaw polled 6814 votes.
National People’s Party (NPP) candidate Kitbok Nongrem got 3212 votes.
On the other hand, 244 votes were cast on the NOTA option.
The by-election to the Langrin seat of the KHADC was held on February 28 last.
The by-election was necessitated following the death of UDP MDC Nasar Marwein on October 28 last year.
The by-election was conducted by the District Council Affairs department of the State Government.
The KHADC has 30 members including one member nominated by the Governor.
At present, the KHADC has 29 members following Marweiñ’s demise.