He’s the leader of the Greens Party since 2015 and Senator for Victoria. He was a former doctor turned politician. He’s pro recreational weed, pro environment, pro equal rights. A better idea of what he’s voted for and against can be found on TheVoteForYou.org. A few examples include:
Pro:
Carbon Price
Transition from fossil fuels to renewable energy
Good NBN
Criminalising revenge porn
Decreasing the wage gap
Ending indefinite detention on Manus/Nauru
Increasing Aboriginal Land Rights
Against:
Deregulating Uni fees
Increasing surveillance powers (remember that all our metadata is stored for 2 years)
Adani Coal Mine (that would threaten the Great Barrier Reef)