RealClearPolitics provides a useful tool to compare the Republican and Democratic nomination races today to similar points during the 2012 and 2008 primary cycles. Those nominating contests show that the candidates ahead at this point in the election cycle did not take home the nomination. This suggests that despite Donald Trump and Hillary Clinton’s persistent leads throughout the summer and fall of 2015, their primary victories remain uncertain.
Averaging across recent December polls, Donald Trump holds the lead among national Republican voters (not necessarily likely primary voters), at 35 percent. Trump holds a 15-point lead over Sen. Ted Cruz (R-TX) in second place at 19.5 percent and an over 20-point lead over Sen. Marco Rubio (R-FL) in third place with 11.5 percent. Trump’s support took-off in July and, for the most part, he’s remained ahead and increased momentum.
Does Trump’s lead entering into 2016 portend his eventual win? Not necessarily.