Delegate: Marrabuk

Nominally, they are the leader of the region in World Assembly (WA) Affairs. However, their duties extend to being the head of state, government, and executive. They are also the Commander-in-Chief of EPSA and much more!
Learn more: a video on the Delegate's daily activity

Due to game mechanics, the delegate is the nation with the most endorsements in a region. Since The East Pacific is democratic, the only legal method for becoming delegate is citizens voting for them.
Learn more: a thread that shows how delegate elections are conducted

Cabinet Members include

Cabinet members are in charge of a particular Ministry, which means they focus on that part of the game. Current Ministries are Culture, Foreign Affairs, Eastern Pacific Sovereign Army (EPSA), Immigration, Information/Communications, RMB affairs, and WA affairs.
Learn more: by following the links to each ministry.

The Cabinet serves at the Delegate’s pleasure. They are appointed by the Delegate's announcement. That doesn't mean you can't be involved in the executive, however. You can join as a worker here.

Regional Officers include

Regional Officers are granted in-game powers like Appearance, Border Control, Communications, and Polls. They maintain in-game stability and moderate.

Regional Officers include

Cabinet Advisors include

Just as their title implies, they give advice to the Executive. They often guide policy initiatives.

It’s hard to become an Advisor if you are just interested in the position alone. They earn the executive’s trust over time and with experience.

Provost: Bachtendekuppen
Deputy Provost: Rage Mage
Current Magisters are

They debate and pass laws. The Endorsement Cap was set by the Magisterium, and so was the RMB act. They affect you even if you aren’t in government!
Learn more: a compilation of the laws of TEP

First, become a citizen. If you have a WA nation in TEP, you can apply and are immediately accepted. If you don’t, you can apply and be questioned. In the latter case, current Magisters will, by simple majority vote, determine whether you are eligible to join the Magisterium.
Join here

Viceroy: Zukchiva
Current Arbiters are

In case of any violations of TEP’s law, the Conclave is charged with interpreting the law. They conduct trials and host the delegate elections. They can also remove a vizier by a two thirds vote.
Learn more: see a trial in action

Arbiters are citizens who are appointed for six month terms. They are nominated by the Delegate and confirmed by the Magisterium with a simple majority (50%).
Learn more: see a debate about an Arbiter nomination

Grand Vizier: McStooley

Remember how I said the only legal way to become delegate was to be elected by citizens? There is also an illegal way: raiding. Raiders from other regions may attempt to take the delegacy—such attempts are called coups. In order to prevent that, the Viziers are in charge of regional security. They are the first line of defense against a coup. They elect among themselves four nations to have Border Control powers, which allow them to ban and eject nations from the region. They also help to build the community.
Learn more: an article about raiding and defending

Viziers are nominated by the delegate and confirmed by the Magisterium with a two thirds vote.

Todd McCloud wrote:

Viziers are those who are widely trusted in the region. They may have served as delegate in the past, but that's not essential. Usually, a delegate will select someone they know and trust in the region, someone who has demonstrated by all accounts that they're here for the region first. If they are nominated, they go to the Magisterium for a vote. If the Magisterium agrees, they are made into a delegate.

It is rare for a vizier to be made into a vizier - actually, it's rarer than our delegate elections. If anyone here aspires to be a vizier, I think that's great, but it will take time and a strong track record. Simply having endorsements or being active isn't enough. It is probably the hardest thing to obtain in this region, but if you're looking to obtain it simply as a position, you're probably doing it wrong.

Under the supervision of the Viziers, EPPS ensures the laws are carried out in-game.

Be a citizen and apply on the forums.

A citizen of TEP can vote in the delegate elections and apply to participate in the upper echelons of TEP’s government. Becoming a citizen is the first step to getting involved in government.

All you need to know is your nation name and an email address!
Join here.

They can participate in RP, GP, issue answering, and card collecting. Residents are the heart of TEP's community.

You already are one of you have a nation in TEP!