The second episode follows Sen. Marco Rubio, Gov. Chris Christie, former Gov. Jeb Bush and Gov. John Kasich as they prepare for the all-important, first-in-the-nation primary in New Hampshire.

This episode follows the angst and drama leading up to the Iowa caucuses, with a showdown brewing between Democrats Bernie Sanders and Hillary Clinton and the GOP's first real test of outsider candidates versus the establishment.

The fourth episode goes inside the Iowa fallout and the momentum leading into New Hampshire's primary. Who’s got it? Who doesn't? And how can the Clinton and Trump campaigns pick up the pace to beat back the surge of Sanders and Cruz?

From the electric jolt of New Hampshire to the hard truths coming up in South Carolina and Nevada. Trump tastes victory, Kasich picks up momentum - and Bush faces the prospect of an impending do-or-die reality.

As the campaigns head towards the final stretch leading to Nevada and South Carolina, there's growing anxiety among both frontrunners and stragglers about just how high the stakes are - and the significance of falling behind.

With the field narrowed down to The Big Five, the campaigns spread their game across the country and play to their strengths - with eyes squarely focused on the all-important upcoming prize: Super Tuesday.

With big wins for the front-runners on Super Tuesday the rest of candidates are reckoning with the results. But the biggest story of all might be one both Democratic and Republican establishments can agree on: how do they stop Trump?

It's make or break time for Rubio, Kasich and Sanders. As the candidates pin their hopes on Florida and Ohio, can they gather enough momentum to force a brokered convention - or will their campaigns finally run out of steam?

While Rubio gets trumped in Florida, the rest of the candidates remain cautiously optimistic. But are high hopes what they need to pull off a win and secure the nomination - or are they just delusional?

Foreign policy comes to the fore as the political climate grows fiery in the wake of the attacks in Brussels. As Trump and Clinton prepare to square off, can either of them prove their presidential mettle in handling the heat?

Ahead of a Wisconsin showdown the candidates crisscross the state in pursuit of competing agendas. Can Kasich, Cruz or Sanders secure their position as spoilers - or will Clinton and Trump finally be crowned their party's Big Cheese?

From the early primary battles to the Super Tuesday showdown and beyond, pull back the curtain on the 2016 presidential race with Mark Halperin, John Heilemann and Mark McKinnon - and catch-up on the electrifying first twelve weeks.

In the wake of more scandal, Trump and Clinton take each other down.

No president is complete without a veep. Can the candidates find the right-hand man for the job?

The political circus goes into overdrive as Trump is crowned the Republican nominee – and Melania, controversially, speaks! Capitalizing on his children to help humanize his image, can Trump plus Pence finally rally a unified party?

The jeers and boos of Sanders diehards ring out in Philadelphia, before the Democrats at last make Hillary a historic nominee. But is shattering a glass ceiling enough for Clinton and Kaine to unite the party into a winning coalition?

With ten weeks to go until the election the Trump campaign finds itself running from behind. As members of his party start to publicly jump ship, can Trump find a way to close the gap with Clinton or will he just fall further behind?

With the revelation of Clinton’s pneumonia and the scrutiny surrounding Trump’s medical records the question of being fit to lead takes a physical turn. As the campaigns rev up to cover can the seconds-in-command handle the heat?

As Clinton and Trump prepare for the first of their debates, the campaigns target a handful of states that could swing the election. But in the must-win battleground of Florida can either candidate work out a path to gaining the edge?

From debate prep to the big night and the flaps that follow, the script gets flipped as the candidates cede the spotlight to an inside peek into the days and nights of the people who broadcast the news and cover the political sphere.

Tracking the fallout from the second debate and the scandal surrounding a now-infamous audio tape, could this be the final nail in Trump’s campaign coffin – or can he pull off a surprise October Surprise to rally yet another comeback?

Amid claims of foreign intervention, international espionage and widespread hacking, Clinton faces what might turn out to be her toughest opponent to date: WikiLeaks, and the trove of highly sensitive, private emails it’s made public.

The final two-week push going into the election sees the full weight of the White House come out in force for Clinton’s campaign, including one man who has the potential to swing those states still up for grabs: Joe Biden.

Clinton in Arizona? Trump in Washington? As different polls predict differing outcomes both campaigns make a case in far-fetched battlegrounds. In a race that’s either up for grabs or already decided, hope, it seems, springs eternal.

In a special hour-long episode of the real-time documentary series, Mark Halperin, John Heilemann and Mark McKinnon go behind the scenes of both campaigns in the lead up to Election Day – and the fallout that followed. Series finale.