Agag's political career began when, at the early age of 18, he became a member of Nuevas Generaciones (NNGG), the youth organization of the main center-right Spanish party Partido Popular, which at the time was in the opposition.
Having been actively involved in politics while at University, he quickly moved up the ranks of the youth structure of the party, joining, due to his knowledge of languages, the international relations department.

During that time Agag travelled extensively representing NNGG in organizations such as DEMYC and EYCD, center-right parties from Europe and the world that brought together youth political branches.
Agag was elected International Secretary of NNGG at their congress in 1994.

In the same year, Agag graduated in economics and was offered the position of Deputy Secretary General of the European People's Party.
An offer that was as a direct result of the election – a few months earlier – of the German Klaus Welle as Secretary General.
Welle and Agag met in the youth organizations level, and Welle took Agag with him to the EPP – Agag was 23 at the time.
That year, Agag also ran for a seat in the European Parliament, he campaigned in towns and villages in Extremadura; he was not elected at this time.

As deputy secretary general, Agag was in charge of coordinating the different policy working groups within the EPP, and drafting of policy papers to be presented at the congress.
As DSG Agag was a member of the EPP Summit, which meets before the European Council meetings and includes all of EPP's Heads of State and Government.

In 1996 the Center-right won the elections in Spain, and Agag was offered the position to become designated aid of the President of the Government, José María Aznar.
The President had three aides, one diplomat, one military and one political (Agag).
He was 25 at the time, and spent three years in that position.

In 1999, at 28 years of age, he was elected a Member of the European Parliament (MEP) for the Partido Popular.
He entered the Economic and Monetary affairs commission, focusing in antitrust policy.
In 2000 he led the Parliaments report on antitrust policy, and was active in redrafting the present antitrust rules.

 
Earlier that year he had also been elected Secretary General of the European People's Party, replacing his colleague Klaus Welle.
During his mandate as SG the organization expanded to the east of Europe, during that period it incorporated more than 20 new political parties from the region.
Later that year, for the first time, the EPP won the European Parliament elections and became the largest political force in Europe.

Agag was also very active in Italy.
Making a controversial decision, and against some member parties within the organization, he pushed for the acceptance of Forza Italia, Silvio Berlusconi’s party, into the EPP.
This was of help to Berlusconi, who went on to win the elections in Italy in 2001.
That year Agag intervened in the closing campaign rally of Forza Italia in Rome.

In 2000 Agag was elected in Mexico Secretary General of the Christian Democratic International, renamed at that meeting Centrist Democratic International.
This global political organization has over 90 member parties from all over the world.

In 2001, Agag made a decision to cease his political activities in order to furtherance a career in business and sporting activities.
The following year he was succeeded at the EPP by an old fellow during his times with Aznar: Antonio López-Istúriz.
He remained a member of the European Parliament until 2002.
Agag's political career began when, at the early age of 18, he became a member of Nuevas Generaciones (NNGG), the youth organization of the main center-right Spanish party Partido Popular, which at the time was in the opposition. Having been actively involved in politics while at University, he quickly moved up the ranks of the youth structure of the party, joining, due to his knowledge of languages, the international relations department.
During that time Agag travelled extensively representing NNGG in organizations such as DEMYC and EYCD, center-right parties from Europe and the world that brought together youth political branches. Agag was elected International Secretary of NNGG at their congress in 1994.
In the same year, Agag graduated in economics and was offered the position of Deputy Secretary General of the European People's Party. An offer that was as a direct result of the election – a few months earlier – of the German Klaus Welle as Secretary General. Welle and Agag met in the youth organizations level, and Welle took Agag with him to the EPP – Agag was 23 at the time. That year, Agag also ran for a seat in the European Parliament, he campaigned in towns and villages in Extremadura; he was not elected at this time.
As deputy secretary general, Agag was in charge of coordinating the different policy working groups within the EPP, and drafting of policy papers to be presented at the congress. As DSG Agag was a member of the EPP Summit, which meets before the European Council meetings and includes all of EPP's Heads of State and Government.
In 1996 the Center-right won the elections in Spain, and Agag was offered the position to become designated aid of the President of the Government, José María Aznar. The President had three aides, one diplomat, one military and one political (Agag). He was 25 at the time, and spent three years in that position.
In 1999, at 28 years of age, he was elected a Member of the European Parliament (MEP) for the Partido Popular. He entered the Economic and Monetary affairs commission, focusing in antitrust policy. In 2000 he led the Parliaments report on antitrust policy, and was active in redrafting the present antitrust rules.
 
Earlier that year he had also been elected Secretary General of the European People's Party, replacing his colleague Klaus Welle. During his mandate as SG the organization expanded to the east of Europe, during that period it incorporated more than 20 new political parties from the region. Later that year, for the first time, the EPP won the European Parliament elections and became the largest political force in Europe.
Agag was also very active in Italy. Making a controversial decision, and against some member parties within the organization, he pushed for the acceptance of Forza Italia, Silvio Berlusconi’s party, into the EPP. This was of help to Berlusconi, who went on to win the elections in Italy in 2001. That year Agag intervened in the closing campaign rally of Forza Italia in Rome.
In 2000 Agag was elected in Mexico Secretary General of the Christian Democratic International, renamed at that meeting Centrist Democratic International. This global political organization has over 90 member parties from all over the world.
In 2001, Agag made a decision to cease his political activities in order to furtherance a career in business and sporting activities. The following year he was succeeded at the EPP by an old fellow during his times with Aznar: Antonio López-Istúriz. He remained a member of the European Parliament until 2002.
Alejandro Agag