1) The document compares social media use in the 2013 and 2016 Australian federal elections by analyzing candidates' Twitter accounts and engagement with candidates.
2) It finds that in 2013, Labor candidates were more active than Coalition candidates on Twitter, while in 2016 both parties' candidates were more active.
3) Engagement with candidates on Twitter also increased from 2013 to 2016, with more retweets especially of Labor candidates in 2016.