With less than a week to go before the two-hour premiere of Season Two of Game of Thrones on Sunday, HBO is taking a leaf out of Harry Potter's book and asking fans to pledge their allegiance to one of five choices in the battles ahead.

Rather than school houses like Gryffindor or Ravenclaw, however, the network is asking viewers to pledge themselves to noble Houses. And unlike the popular J.K. Rowling series, no one House has a monopoly on either evil or good.

Over the past week, HBO has aired five TV spots for each of the five Houses in play: the Greyjoys, the Baratheons, the Starks, the Lannisters and the Targaryens. Those who pledge their allegiance to one of the five can enter a sweepstakes for the chance to win Game of Thrones memorabilia and autographed merchandise from the show.

So far, 54 percent of those voting have pledged themselves to House Stark, certainly the most sympathetic of the five. Twenty-eight percent have pledged themselves to Daenerys and House Targaryen. The Baratheons and the Lannisters are tied with six percent support each, with House Greyjoy just behind with five percent.

Are you a Greyjoy, a Stark, a Lannister, a Targaryen or a Baratheon? Watch the five HBO spots for Game of Thrones Season Two and find out where to vote for your pick below.

House Greyjoy

Sigil: Golden kraken on a black field.

Words: We Do Not Sow.

Trailer: What is dead may never die. But rises again, harder and stronger.

At the start of Season Two of HBO's Game of Thrones, Theon Greyjoy finds his loyalties are divided between the Starks and his legacy as prince of the Iron Islands, a cluster of land masses off the coast dedicated to a seafaring pirate culture and the worship of the Drowned God. Theon became the Stark's prisoner and eventual ward when he was eight years old, after a failed rebellion by his father Balon Greyjoy against the Baratheons. Now that the clash of kings has begun again, the Greyjoys see another opportunity to fight for their independence and surrounding areas in the North. Fierce, embittered and unyielding, House Greyjoy is now dedicated to the restoration of its rights and lands.

We are iron-born. We are not subjects, we're not slaves, Balon tells Theon in the teaser. We take what is ours. How do you feel about that?

Are you a Greyjoy? Pledge your allegiance on the Game of Thrones Facebook page.

House Lannister

Sigil: Golden lion on crimson field.

Words: Hear Me Roar!

Trailer: I understand the way this game is played.

The Lannisters are the only House with not one, but two mottos (their official words and the unofficial phrase A Lannister always pays his debts), and the family wouldn't have it any other way.

We are not fools, Tywin Lannister, the patriarch of Casterly Rock, told viewers in Season One. We are a house to be feared. With Robert Baratheon's death, Joffrey sits on the Iron Throne, ignorant (as is most of the kingdom) of the fact that he is not Robert's son but the product of Cersei and Jaime Lannister's incestuous union. As their younger brother Tyrion (and his trademark smirk) attempts to use his formidable intellect to rule as Hand of the King, Cersei battles him for control of the realm, all while the Lannister's enemies circle around them. Ambitious, unscrupulous and imperious, House Lannister is fighting to hold the kingdom together, using both its considerable wealth and alliances forged through fear and debt.

This is what ruling is: ripping them out one by one before they strangle you in your sleep, Cersei tells Tyrion, before the trailer brings us back to her words to Joffrey in Season One: Everyone who isn't us is an enemy.

Are you a Lannister? Pledge your allegiance on the Game of Thrones Facebook page.

House Stark

Sigil: Grey direwolf on white field.

Words: Winter is Coming.

Trailer:  The King in the North!

Following Ned Stark's exeuction at the hands of the sadistic King Joffrey, his young son Robb has been leading a rebellion against King Joffrey in order to reclaim his ancient rights as ruler of a free and independent kingdom in the North, and his victories on the field make him one of the Lannister's biggest threats. While Robb heads South however, his half-brother Jon Snow heads North, traveling beyond the Wall alongside Commander Mormont on an expedition by the Night's Watch to battle wildlings and the zombie-like white walkers that threaten the realm. Arya meanwhile, their youngest sister, is disguised as a boy, having fled King's Landing after her father's execution. Honorable, loyal and righteous, the Stark family fights not only to regain their strength, but to bind themselves together as a family once more.

They call him the Young Wolf, Arya Starks says of Robb in the Season Two trailer. They say he can't be killed.

Are you a Stark? Pledge your allegiance on the Game of Thrones Facebook page.

House Baratheon

Sigil: Crowned black stag on field of gold.

Words: Ours is the Fury.

Trailer: The time has come to choose.

The Starks, torn apart by war and the actions of a sadistic king, have banded together in the aftermath of King Robert's death. His two brothers, however, Renly and Stannis, are caught in a fight for the throne, even as they plan to take the crown from Joffrey, whom both brothers know is not the true heir. Stannis, unquestionably for justice and unquestionably dour, believes in his right as the eldest to the Iron Throne and follows the monotheism of R'hllor, the Red God. Renly, his far more engaging (and secretly gay) younger brother has gathered the southern lords to his side based on the idea that the people love him, not Stannis. Decisive, determined and ambitious, the two brothers would make a formidable team...if they could ever untie themselves against their common enemy.

Our war is just beginning, Renly tells his brother Stannis in the Game of Thrones teaser. We shall see, Renly, Stannis replies. We shall see.

Are you a Baratheon? Pledge your allegiance on the Game of Thrones Facebook page.

House Targaryen

Sigil: Red three-headed dragon on a black field.

Words: Fire and Blood.

Trailer: I am the dragon's daughter...Those who would harm you will die screaming.

House Targaryen ruled Westeros and its seven kingdoms for nearly 300 years before the Baratheon rebellion drove Daenerys (Dany) and her brother Viserys, the only survivors of their House, across the Narrow Sea. In Season Two of Game of Thrones, Dany has lost her brother, her unborn child and her husband, Khal Drogo. But she has also gained the first three dragons seen in over a century, and has become the first female Dothraki leader, a Khal in her own right. As she and her fledgling khalasar struggle to survive, Daenerys observes the battles that are tearing Westeros apart and sees an opportunity to reclaim her heritage and her throne. Loyal to her new family, lethal to her enemies and tender to those in need, Daenerys Stormborn is the Mother of Dragons: passionate, regal and increasingly unyielding.

When my dragons are grown, we will take back what was stolen from me, a desperate but unwavering Dany warns in the Season Two trailer. We will lay waste to armies and burn cities to the ground. Turn us away, and we will burn you first.

Are you a Targaryen? Pledge your allegiance on the Game of Thrones Facebook page.