Winner-take-all states will likely further Trump's lead

Coming off his decisive win in Nevada, Donald Trump will likely enjoy a special advantage in regards to winner-take-all Republican races going forward. The handful of states with pure winner-take-all allocation rules all hold their primaries relatively late in the lineup, too late for Trump's challengers to use them to play catch-up in the delegates game.

Some states use a hybrid system to allocate Republican delegates, and if Trump's momentum holds, those systems are likely to benefit him, too. For instance, in Arkansas, a Super Tuesday state, a candidate must win at least 15 percent of the vote to receive any delegates, but if he or she tops 50 percent, it shifts to winner-take-all. Based on performances in South Carolina and Nevada, Ben Carson and John Kasich would receive no Arkansas delegates, and Trump would be in striking distance to take all 40 available.