Well, if the storyline follows the original British version of the House of Cards, there won’t be a 4th season. We’ll see.
I haven’t watched all of them but I know enough to know that there will be a season 4-unfortunately because it needs to end now.
I have watched 5 episodes of season 3 so far and I don’t think it follows it that much any more. Even the second season already strayed quite far.
Season 3 seems just boring bad television after the first two, that I liked.
Also in British version 3rd series was more than 10 years after the 1st series so the change and new arrogance in F.U seemed more believable.