Whether you like it or not, the 2016 presidential election is underway. As President Obama begins the last two years of his presidency, the field of would-be candidates eagerly jockey to replace him. What begins now, a year before primary voters cast their votes, is the “invisible primary,” where potential candidates work feverishly behind the scenes to court donors, create campaign apparatuses, and boost their name recognition and policy credentials. While many see Hillary Clinton’s nomination for the Democratic Party as inevitable, the Republican field is anybody’s guess.