Frank and Claire have been, over three seasons, the ultimate TV power couple. I mean, they've literally been a couple all about getting and then keeping power, and supported and helped each other get there (although it may be unfairly weighted in Frank's favour). Not anymore though, at least based on the end of Season 3. Claire finally snapped and did what any sane person would've done long before then, and walked out on her husband. But is she gone for good? The show revolves around the pair, so how it will work with them separated is a big question to force itself into answering, and it'd be easy for them to backtrack on it. Hopefully that's not the case, because as great as they are together, the prospect of a real battle of wits between Frank and Claire is an extremely enticing one.