By Nishan Khatiwada in The Kathmandu, March 31,2023Rajendra Mahato, a veteran of Madhesh politics, has tossed his hat in the ring for the by-election in Bara-2, a constituency that has remained vacant after Ramsahay Prasad Yadav was elected the country’s Vice President. Keshav Jha, executive member of the Loktantrik Samajbadi Party, confirmed to the Post that his party has decided to field senior leader Mahato for the by-election. “The Janamat Party had previously promised to…