How do you produce an authentic self on social media? This question is increasingly critical for modern politicians, as authenticity plays an ever-more prominent role in Western elections. In the United Kingdom, the political environment has been characterized as "the battle for authenticity" (Moore, 2017), while the 2016 US presidential election was widely dubbed as "the authenticity election" (Richman, 2015; Sargent, 2015; Zimmer, 2015). Many voters now prize authenticity as more important than policies (Echelon Insights, 2015). As politicians turn to social media to create an authentic persona to appeal to voters, understanding how authenticity is produced on these platforms is increasingly urgent. As has been noted for some time, any self-presentation on social media comes down to the deployment of verbal and nonverbal cues (Marwick, 2005; Papacharissi, 2011). Using the right emoji, punctuation, cultural reference, or selfie can be the difference between constructing an authentic persona and being renounced as a fake. Social media is an environment where intense scrutiny is applied to minute presentational cues (Ellison, Heino, & Gibbs, 2006; Salisbury & Pooley, 2017). This means that individuals, politicians included, must engage in sophisticated semiotic strategies to be viewed as authentic. However, research into political authenticity on social media is yet to address the semiotic components of politicians' self-presentation. Critical attention has so far focused on how perceived authenticity is influenced by messages' content (e.g., Dumitrica, 2014; Grow & Ward, 2013), but is yet to explore the formal architecture that these messages inhabit. With the role of authenticity cues being highlighted in other contexts, such as vloggers' use of amateurish features (e.g., Abidin, 2017), and researchers advocating a semiotic approach to political authenticity for some time (e.g., van Leeuwen, 2001), an account of the role of cues in political authenticity is overdue. To address this critical gap, I undertake a close reading of Donald Trump's tweets during the 2016 presidential election 800315S MSXXX10.