Robinson and 29 other delegates tried to get the Housing Department Chief to resign in Aug 2015. On May 25, 2017, Robinson filed his candidacy for reelection as Delegate. In June 2018, he lost the primary election by 154 votes. Following the general election, Robinson switched his party affiliation to the Green Party. Robinson co-sponsored a bill to prohibit wage discrimination based on gender identity. He also co-sponsored a bill to authorize same-sex marriage. Robinson is an advocate for alternative energy he is a strong supporter of the Off Fossil Fuels Act which would require Maryland to achieve 100% renewable energy by 2035. He sponsored a law to ban fracking, which passed in Maryland. He was awarded Green Champion by the Maryland League of Conservation Voters for his work in promoting environmental causes in 2017. He voted yes on a bill to reduce green house gas emissions. Robinson is a vegan, and has said that animal rights are important to him. He has advocated against the competitive hunting of Cownose Rays. He also has sponsored a bill to end training on live animals at Johns Hopkins. Furthermore, he advocates limiting the use of antibiotics in livestock. In 2014, Robinson was endorsed by Equality Maryland, Maryland State and Washington, DC AFL-CIO, Maryland State Education Association - NEA, NARAL Pro-Choice Maryland, National Organization for Women, Progressive Maryland, Sierra Club Maryland Chapter, and United Food & Commercial Workers. Robinson endorsed Ben Shnider in the race for District 3 County Council. He also condemned a petition to limit early endorsements. Tim Willard, of the Montgomery County Green Party, and Meg Robbins, of Food & Water Watch encouraged state legislators to support Shane Robinson for his work on supporting the Off Fossil Fuels Act. Robinson voted in favor of legislation which would require the fingerprinting of gun buyers, prevent purchasing of guns by the mentally ill, a ban on assault weapons, and banning magazines that hold over 10 bullets. Robinson co-sponsored legislation to prohibit price hikes in generic drugs in Maryland, the legislation passed. Robinson co-sponsored legislation to raise the minimum wage in Maryland. He also supported a bill which would require public school teachers paying labour union fees. He voted yes on a bill to require certain employers to provide paid sick leave. Robinson voted yes on a bill to repeal the death penalty. Voters to choose three: Voters to choose three: