Studies of digital campaigning have revealed substantial change in the nature of political campaigns. Tracing the rise of email, party websites, social media, online videos and gamification, scholars have shown how, since the 1990s, parties have become heavily dependent on digital technology (Gibson, 2015). In this chapter we focus on two elements of the 2017 digital campaign: Facebook advertising and what we term 'satellite campaigns'. Whilst resisting claims of revolution and transformational change (Kreiss, 2010, Williamson, Miller andFallon, 2010)w e nevertheless argue that these digital practices have important implications for parties' organisational structures, practices and behaviour, as well as for public expectations of campaigning. Through this analysis we contend that the 2017 general election provides further evidence that 'digital media are reconfiguring party-related engagement' (Vaccari and Valeriani, 2016, p. 295), and agree with Gibson (2015, p. 191) that by 'chaf[ing] against embedded organisational routines and norms' these developments challenge established understandings of parties' campaign strategies.In examining digital, we adopt an expansive definition of the term. Alongside an interest in social media and party websites, we also examine the organisational digital infrastructure on which parties rely. Including digital databases, canvassing systems, online phone banks, and email lists, digital infrastructure is pivotal to parties' diverse campaign activities by enabling participation through the reduction of resource costs. In the analysis that follows, we employ this expansive conception of digital to consider developments within the Labour and Conservative parties, using these examples to illustrate wider emerging trends.By April 2017, few were predicting an early general election, but in the days that elapsed between Theresa May's surprise announcement on 18 May and the vote on 8 June, parties across the spectrum exhibited formidable online and offline campaigns. In the digital realm, Twitter, Facebook, YouTube, Snapchat, and