POWER RANKINGS: Here's who has the best chance at being our next president

Republican voters will head to the polls in South Carolina on Saturday, while Democrats in Nevada will caucus for their preferred candidate.

On both sides, the insurgent candidates are trying to sustain huge streaks of momentum off impressive wins in the New Hampshire primaries.

Republican candidate Donald Trump and Democratic hopeful Bernie Sanders each notched a double-digit victory in New Hampshire after a narrow loss in the first-in-the-nation Iowa caucuses.

Trump is now looking for a defining victory in the Palmetto State, while Sanders is trying to prove he can challenge Democratic frontrunner Hillary Clinton in a state whose electorate is more favorable to the former secretary of state.

With all that in mind, we take another look at who has the best chance of making it to the White House to succeed President Barack Obama.

Our rankings are based on the Real Clear Politics averages of national polls and those in the states of South Carolina and Nevada. We also factored in the candidates' delegate count and their finishes in Iowa and New Hampshire, as well their momentum (or lack thereof) over the past few weeks.

Since New Hampshire, two more Republican candidates have dropped out of the race: former Hewlett-Packard CEO Carly Fiorina and Gov. Chris Christie of New Jersey.

Here's a look at where all the candidates stand.

All poll results as of Thursday.