Benjir was elected as the first Member of Parliament in the Ninth National Parliament elections in 2008.[7] During the Ninth Parliament, he was a member of the Petition Committee and the Parliamentary Standing Committee on the Ministry of Lands. In 2014, he did not participate in the election as he was not nominated. He was nominated by Awami League in the 11th National Parliament election held on 30 December 2018 and later got the candidacy of Grand Alliance.[8] He was nominated by Awami League in the 12th National Parliament election held on 7 January 2024. He got 83,708 thousand votes defeating his nearest rival independent candidate Mohaddesh Hossain.[9][10]