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

Clinton Maintains Strong Lead Ahead of SC

After Iowa and New Hampshire, it's on to South Carolina and Nevada.

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 "outsider" 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 both notched double-digit victories after narrow losses in the first-in-the-nation Iowa caucuses.

Now, Trump is looking for a defining victory in the Palmetto State, while Sanders is trying to prove he can challenge Democratic front-runner 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 finish 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 New Jersey Gov. Chris Christie.

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

All poll results as of Thursday.

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

5. Marco Rubio, Republican, senator from Florida

Rubio was perhaps the biggest winner from the Iowa caucuses, as he and his campaign played the "expectations game" perfectly and surprised with a stronger-than-expected, third-place finish right behind Trump.

He stumbled ahead of New Hampshire with a widely panned debate performance, ending up fifth in the primary. Now, he has seen a swing of momentum back his way ahead of the South Carolina primary. On Wednesday, he secured the endorsement of South Carolina Gov. Nikki Haley, who is highly popular in the state.

And his polling trends leading into primary day look very much like they did heading into the Iowa caucuses.

National polling average among Republican voters: 16% (3rd)
South Carolina: 17.1% (3rd)
Nevada: 19% (3rd)

STOCK: Neutral
Last month: 4

(Photo by Alex Wong/Getty Images)

3. Ted Cruz, Republican, senator from Texas

Cruz rode a record turnout in Iowa — something that was supposed to benefit Trump — to a surprisingly robust victory. He has built momentum heading into his target — the "SEC primary" states in the South, many of which vote March 1.

Cruz's under-the-radar campaign has put him in sneakily good position to capture the nomination. And his eye-popping fund-raising numbers mean he will most likely be in the race for the long haul.

Cruz inspires a flood of enthusiasm among the GOP base, and he may be the best-positioned candidate from within the political sphere to back up the notion that he's not a typical politician, that he is the outsider the base wants despite his day job in Washington.

National polling average among Republican voters: 20.6% (2nd)
South Carolina: 17.6% (2nd)
Nevada: 20% (2nd)

STOCK: Rising
Last month: 3

(Photo by Sean Rayford/Getty Images)

2. Donald Trump, Republican, businessman

Trump has lit the political world on fire since his entry into the race last summer. And he has showed surprising staying power — we're now on month No. 9 of the Trump show.

He lost in Iowa. But the Hawkeye State was never fertile ground for someone like Trump, a brash New York billionaire. And a major win in the Granite State proved the formidable nature of his candidacy.

There's a clear appetite among Republican primary voters for someone like Trump, who entered the race to controversy surrounding his position on illegal immigration. Business Insider discovered more of that when we followed him on the trail for a week last year.

Trump, leading big in polls of South Carolina, could start charting his course toward the nomination in the Palmetto State.

National polling average among Republican voters: 34.2% (1st)
South Carolina: 33.5% (1st)
Nevada: 42% (1st)

STOCK: Neutral
Last month: 2

(Photo by Jabin Botsford/The Washington Post via Getty Images)

1. Hillary Clinton, Democrat, former secretary of state

U.S. Democratic presidential candidate Hillary Clinton speaks during a campaign rally at the International Union of Painters and Allied Trades (IUPAT) training center in Henderson

Clinton is (an increasingly shaky) No. 1 here because she has proved formidable in polling and fund-raising and has still has a clearer path to the nomination than anyone on the GOP side.

But Clinton is facing an increasingly rugged challenge from Sanders, who threatens to win easily a state she captured in 2008. Her campaign is teetering perhaps more than it ever has been, as her "firewall" — her strength in states with more diverse Democratic electorates — is showing signs of melting in Nevada.

If Clinton loses in Nevada, it would be a major blow to a campaign that once seemed to boast the inevitable Democratic presidential nominee.

National polling average among Democratic voters: 46.3% (1st)
South Carolina: 56.7% (1st)
Nevada: 48.7% (1st)

STOCK: Neutral
Last month: 1

(Photo by: Virginia Sherwood/MSNBC/NBCU Photo Bank via Getty Images)


And to the polls: Here's a look at where the candidates stand in their respective parties when combining their delegate totals and their standing in national, South Carolina, and Nevada polls.

SEE ALSO: Donald Trump had a monster night — here's how he did it

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