For the next five weeks, I'm going to have several new phones. That's because I'll be exploring the online worlds of six fictional voters. I want to see how things play out online as we approach a landmark Senedd election. So I'll be scrolling the social media feeds of Lauren, Paul, Claire, Rohan, Siân and David, six fictional voters I've created based on data and analysis from the National Centre for Social Research. I'm calling them undercover voters, a phrase coined by BBC social media