Donald Trump and Sen. Bernard Sanders scored big wins in New Hampshire but the campaign for each party's nomination turns south and west, where the real race begins, according to political analysts and strategists Roll Call asked to analyze the Tuesday’s results.
Here are their takes on what happened on Tuesday and what will happen next in South Carolina and Nevada:
Sending a message: "Donald Trump's blowout win is what happens when a candidate doesn't face a sustained attack from his opponents. But Trump has also aligned himself with some very real, populist resentment out there and brought together some Republicans and independents to send a message.
"Sanders is filling this void in a leftward-drifting Democratic Party whose voters seem to be pining for an authentic liberal who can be a warrior for a progressive agenda. Hillary Clinton is trying to appeal to their head, while Sanders has found a way to their heart."
-- Kevin Madden, partner at Hamilton Place Strategies and former national press secretary and senior communications strategist for Mitt Romney’s campaign and former campaign spokesman for George W. Bush’s 2004 campaign. Roll Call's Primary Calendar Size matters: "The size of Sanders victory does matter. You get 60 percent in any race, it is a big victory which cannot be spun otherwise. He will have momentum.
"It forces the Clinton campaign to assess their strategy, message and tactics, and do it in a hurry."
-- Rick Ridder, a longtime Democratic consultant who was a member of Bill Clinton’s 1992 campaign, managed Howard Dean’s campaign in 2004 and served as Arizona field director for Hillary Clinton in 2007. Game on: "These first two contests are great episodes of reality TV but voters around the country (and especially in the South) couldn't care less about results of Iowa and New Hampshire.
"The real race to the nomination starts now."
-- Morgan Jackson, a Democratic consultant in North Carolina.
Looks like all non-Trump candidates could finish closer to Jim Gilmore than they will to The Donald. https://t.co/5MiuYK3wjd— Nathan Gonzales (@nathanlgonzales) February 10, 2016
A more trying test: "Donald Trump heads to South Carolina with a double-digit lead and a big win, and opportunity to repeat that win. Trump's candidacy reverberates with more moderate, secular voters who are challenged by economic and cultural globalization. There are many of those voters spread across South Carolina and Trump resonates with them.
"The challenge for Trump is South Carolina is a much more demographically, geographically, and economically diverse state than either Iowa or New Hampshire. While he holds a big lead in early polls, to win South Carolina you have to build a broad coalition across evangelicals, ideological conservatives, the business communities, veterans and retired military, and other factions. Economically disaffected voters are not enough to win -- you need a broader coalition.
"Donald Trump passed an early test on Tuesday but now he graduates to face a different and more trying exam in a bigger, more politically complex state."
-- Bruce Haynes, founding partner and president of Purple Strategies who was a media consultant to the Republican National Committee’s 2008 independent expenditure campaign and a former chief of staff to former Rep. Bob Inglis.
The two oldest candidates won tonight. Just a random observation. — Stuart Rothenberg (@StuPolitics) February 10, 2016
Gaining steam: "Trump’s momentum is beginning to gain steam with this first decisive victory. His strategy of selling the public his message on a wholesale level beat others out that had massive statewide operations. Enormous pressure is on the establishment wing to consolidate around one candidate soon or else it will hand the Republican nomination over to Trump.
"What’s clear is that Christie’s suicide attack against Rubio had an impact on voters who turned to Kasich and Bush as an alternative.
"Kasich’s investment in New Hampshire paid off in dividends, but he is at a disadvantage without a national organization to build on this momentum.
"Bush who was counted down and out will have some new life breathed into his campaign to keep his fight alive. Christie, Carson and Fiorina could drop out soon because their funding will likely dry up making organizing an effective campaign virtually impossible.
"The stakes will be high for Cruz to attempt to stop Trump in South Carolina through evangelical voter turnout."
-- Ron Bonjean, a veteran GOP strategist and former top Capitol Hill communicator Roll Call's Endorsement Tracker She’s not Bill: "For Donald Trump the race moves to the South where he is popular, but he will run into a strong organization by Ted Cruz and some familial evangelical and veteran fondness for Bush.
"Bernie Sanders moves to less friendly states, but Hillary Clinton will demonstrate she is not beloved in the South like her husband nor is she a strong and charismatic candidate like President Obama. She simply fails to inspire the liberal base which turns them to Sanders for lack of options."
-- James Harris, a Republican consultant who is helping Jonathan McConnell in his challenge to Alabama Republican Sen. Richard C. Shelby. Independents decide in the fall: "Hillary Clinton has to do well after Nevada and South Carolina because nominating Bernie Sanders could give the general election to someone like Donald Trump.
"Diehard Democrats and Republicans might decide who is nominated for their parties in the spring, but independents decide in the fall and they will not elect a self-proclaimed socialist."
-- Adrianne Marsh, a Democratic consultant who helps elect red state Democrats from Claire McCaskill in Missouri to Michael Bennet in Colorado
Time to go: "It’s time for bottom half to drop out. Come on, Carly, Ben and Chris. It’s time to go.
"Kasich had a great night, but can he translate that to South Carolina, which he has completely neglected?
"Debate missteps clearly hurt Marco 'Mr. Roboto' Rubio -- he needed to have done better.
"Cruz can look forward to South Carolina which is packed with evangelicals.
"The South and the evangelical voters may be Trump’s undoing. We saw what happened in Iowa. The SEC Primary is a real hurdle."
-- Bob Kish, an Ohio GOP consultant
As for Rubio, this is his big test. Every good candidate shows they can take a punch and recover strong. Marco needs a strong next debate. — Ari Fleischer (@AriFleischer) February 10, 2016
More scrutiny for Sanders: "No front-runner likes losing an early contest but the rest of February looks pretty good for Secretary Clinton. She holds a commanding lead in South Carolina and should be a lock for Nevada as well.
"If you are the Sanders campaign, you need to ask yourself: 'How do I take the momentum from tonight's victory through to Super Tuesday?' The small-state retail political landscape that aided him in Iowa and New Hampshire isn't going to help him in March. And he now has the spotlight, which means more scrutiny.
"Bottom line: Going forward, if Sanders doesn't have a strong financial and organizational plan in place accompanied by more detailed policy proposals, then Tuesday might be as good as it gets for him."
-- Rodell Mollineau, a Democratic strategist It’s legit: "Donald Trump proved tonight that he is a real candidate and someone to take seriously. The big question for him was if his support was just fanfare or legitimate. It's legitimate.
"Hillary Clinton should be embarrassed. She won the state in 2008 and the Granite State resurrected her husband's 1992 campaign. She was up on Bernie Sanders when this thing started."
-- Lisa Boothe, a Republican consultant who has worked on a number of House and Senate races Hold up on the coronation: "New Hampshire voters said to the presidential candidates, 'You have to work really hard for this nomination.' With Sanders, Trump and Kasich at the top of the heap, they said to the leading candidates, 'There's no coronation here.' It's a similar message they sent to Obama in 2008."
-- Martha McKenna, a Baltimore-based Democratic consultant who has worked for EMILY's List and the DSCC Roll Call’s Eric Garcia, Simone Pathé, Alex Roarty and Eli Yokley compiled this report.