U.S. election 2016: 6 things to know about the presidential primaries

After all the hype, media appearances anddebates,the official launch to see who will succeed as the Republican and Democratic presidential nominees begins in earneston Feb. 1, when the firstparty supporterswillcast their votes in thenextrace to the White House.

"Unlike just about any other election in the democratic world, thenominationprocess is a sequence of elections," says Elaine Kamarck,author of Primary Politics: Everything You Need to Know about How America Nominates Its Presidential Candidates. "Each contest then builds on the previouscontest, which is why Iowa and New Hampshire have such outsized support."

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The whole process lasts until June, culminating in each party's national convention.

To win the nomination, a candidate must secure 50 per cent of the delegates plus one.The Democrats have not yet finalized their delegate numbers but they are estimated to be4,764. The Republicans have 2,472, so a candidate must win 1,237 delegates.

As the first state to go, the resultsinIowa are of particular importance, setting the tone for the primaries and caucuses to come.

On the Democratic side, we will learn whether Bernie Sanders, the self-proclaimed "democratic socialist,"will be able to squeak out a victory over Hillary Clinton, who long ago was thought to have had the race wrapped up.

But the Republican Iowa caucusresults may prove much more compelling. With all the hype and strong polling numbers around Donald Trump, Iowa will give us the first clue whether the New Yorkreal-estate magnate has been able to convert this support into actual votes.

Iowa, which holds acaucus,is followed byNew Hampshire, which holds the first primary.The results can effectively help clearthe field, weeding outlesser candidates who may drop out if they receive low support.

To better follow along with what can be a confusing process, here are six things to know about the U.S. primaries.

Difference between a primary and a caucus

The difference between a primary and a caucus is thatthe state itself conducts a primary, whilethe state party runs a caucus. A primary takes the form of a traditional election, with a broad group of voters casting secret ballots at polling stations that are open all day.This also means primariesaregovernment-funded, making them the preferred choice for many states.

But caucusestypically held inchurches, school gymnasiums, libraries,community centresand, increasingly rare, at people's homesmeet to openly discuss the candidatesbefore voting. Caucusesalso use the meetings to conduct other party business, such as selecting delegates.

Difference between an open and closed primary

Most primaries are closed, meaning registered Republicans must vote in the Republican primary and Democrats in the Democratic primaries.

But in some states, regardless of one'spolitical affiliation, a registered votercan choose to vote in either primary.But not both.So why would a true blue Democrat, for example,want to vote in the Republican primary?It may be a strategicvote.

Joshua Putnam, a political science professor at the University of Georgia,said there was some anecdotal evidence in the 2012 Michigan primary thatwithBarackObamarunning unopposed, some Democrats insteadvoted for RickSantorum in the Republican primary, thinking he would be a weaker candidate for the president to face off against.

What is Super Tuesday?

Super Tuesday is the day on which the largest number ofstateshold their primaries and caucuses. This year, SuperTuesday falls on March 1, with14 states and America Samoa taking part.

"The dynamics of the race change on Super Tuesday.Instead of looking at who won a state and who came in secondor third, it will be the first time that a largenumber of delegates are selected to the convention,"Kamarcksaid.

"And so what will matter comingout of SuperTuesdayisnot just who won which state, but how many delegates they picked up on that day."

In 2008, HillaryClintondid very well on Super Tuesday in some big states.ButKamarcknotesthatBarackObamacame out with adelegate count almost equal to hers in the end.

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"Super Tuesday can be the beginningof a long, contested race that goes to June, or it could be the end, particularlyif one candidate sweeps it up,"Kamarcksaid.

How delegates are awarded

Delegates are usually active members of the party or party supporterswho have been chosen to represent their state at the national convention.Theythen cast the votes that will determine the final presidential nominee.

Since how these delegates vote isdecided during the primaries and caucuses, much of the national convention is somewhat ofaroll call, with all of the states pledgingtheir support behind acandidate.

The number of delegates each state gets is determined atthe national party level. Both parties have adifferentformulafor arriving at this numberbut it's primarily based on population. California has more delegates than a state like Wyoming.

But the processalso builds in a party loyalty bonus, meaning if your state is traditionally more Republican, it will get an extra allotment ofdelegates, Putnam said.

How delegates are allocated

Again, the Republicans and Democrats have different rules.

The Democratic National Committee requires proportional allocation from all its states:basically if a candidate gets 40 per cent of the vote in a state's primary orcaucus, then they get 40 per cent of that state'sdelegates at the national convention. But a candidate must receive a 15-per-cent qualifying threshold to receive any delegates.

With the Republicans, it gets a little more complicated, as each state has different rules. The first four states to go Iowa, New Hampshire, South Carolina and Nevada arenot bound by rulesof allocation and can choose any method of allocation.These methodsinclude proportional, winner takes all or a hybrid. However, in the first two weeks in March,the 14 states that hold that their contests on Super Tuesday, along with four other states, have to be "proportional."

But as Putnam points outit doesn't necessarily work out that way.

"It doesn't work out in a way [that] if you win 40 per cent of the vote, you get 40 per cent of the delegates," he said."It's more complicated, it varies from state to state. Some states don't have a threshold for qualifying for delegates, others allow for a threshold of 20 per cent of the vote to qualify for any delegates."

After March 14, for the Republicans, states can choose whatever delegate allocation method they want.

Bounded, pledged and'superdelegates'

Most Republican delegates are bounded, meaning if they have been allocated to a particular candidate,they must support thatcandidate at the national convention.However, each state is awarded so-called "RNC delegates," unbounded delegates who are party officials with automatic credentials to the convention. This presumably gives an establishmentcandidate a leg up,according to RealClearPolitics.

On the Democrat side, there are pledged and unpledged delegates, Putnam said.However, unlike the Republican process, the candidates have the final say over the delegates who are pledged to them.

"That right of refusal means that the delegates end up being quite loyal to the candidate to whom they are pledged," he said.

Superdelegates, however, areunpledgeddelegates, meaning that they can throw their support behind whomever they choose.

But the bulk of thesuperdelegates are found in the Democratic party, with more than 700 selected for 2016.These superdelegates areparty brassand elected officials, such assenators, members of congressandgovernors.

In the 2008 primaries, Hillary Clinton led the superdelegatecount over BarackObama, promptingspeculationthatthe close race could come down to these unbounded votes, regardless of Obama'svictory in the primaries and caucuses.In the end, Obama had secured enough superdelegate support, and Clintonconceded defeat.