This is just speculation based on fan discussions of course, but it’s always interesting to see what viewers of the show have to say about it and how they envision its future. Let’s not forget the fact that the producers are most certainly keeping an eye on those discussions themselves, and considering how much time they have until season 5 is supposed to air, they could easily get some inspiration from those threads.
The exact air date of season 5 is not specified yet but most rumors point towards the first quarter of 2017. Pretty much everyone expects to see the show returning by the end of March 2017, but Netflix have been quiet on that issue so far.
It could make sense for the producers to push for an earlier release this time however, as bringing the show out in January would coincide with the month when the new US President officially steps in his position in real life.
The showrunners have always tried to capitalize on real-world events in politics to boost the popularity of the show itself, so this is definitely something we could see them doing. 2016 might be a bit dull for fans of “House of Cards”, but at least they should have plenty of time to discuss what they want to see in season 5, and possibly give the producers some ideas too.