Kimi Raikkonen performed above most people’s expectations last year, and if Lotus can keep up in the development race, I would expect more of the same this year – some strong podium performances, and being in contention for the odd victory. 2012 was a good season for Sauber, and Nico Hulkenberg is a driver with great potential, so I’d be paying attention to them as well.
Not sure if he qualifies as a true dark horse now that he’s a race winner, but Pastor Maldonado should be another driver to watch. He has front-running pace, and hopefully, has learned to temper his over-agressive tendencies. How Valtteri Bottas and the Williams team in general will perform is more difficult to predict.