The opening of the corruption trial against Ekrem İmamoğlu, the jailed mayor of Istanbul and the most formidable rival to Recep Tayyip Erdoğan, has become far more than a legal proceeding.
For many Turks it represents a defining moment in the country’s political trajectory — a test of whether the judiciary will serve justice or power.
On Monday, in a cavernous courtroom inside the high-security Silivri prison complex on the outskirts of Istanbul, İmamoğlu appeared alongside more than 400 co-defendants accused of corruption and running a criminal network linked to the Istanbul Metropolitan Municipality. Prosecutors have assembled a sprawling indictment stretching thousands of pages and listing more than 140 alleged offences. If convicted on all counts, the opposition politician could face prison sentences totalling more than two millennia.
The scale of the trial alone is extraordinary, requiring a purpose-built courtroom to accommodate the mass of defendants, lawyers and journalists expected to attend hearings that could drag on for years. Yet the drama unfolding in Silivri is about far more than municipal contracts or procurement disputes. To critics of the government, it is the latest episode in a long struggle between Turkey’s increasingly dominant presidency and an embattled opposition.
A Rival Who Changed Istanbul
İmamoğlu’s political rise has been swift and startling. In 2019 he captured the Istanbul mayoralty — twice — defeating candidates backed by Erdoğan’s ruling Justice and Development Party in a city long regarded as the political and financial heart of the country. The victory dealt a symbolic blow to the president, who once served as Istanbul’s mayor himself.
Since then İmamoğlu has emerged as a rare figure capable of uniting disparate strands of Turkey’s opposition. Opinion polls have suggested he might defeat Erdoğan in a national election, an outcome that would mark the first serious challenge to the president’s dominance in more than two decades.
It is precisely that political potential, critics say, which explains the relentless legal pressure that has surrounded him.
The mayor was arrested in March 2025 along with more than a hundred associates in an investigation alleging corruption, bribery and links to terrorism. The move triggered nationwide demonstrations and accusations from the opposition that the government had staged what they called a “civilian coup”.
Further legal blows soon followed. A Turkish court later annulled his university diploma — a requirement for presidential candidates — and he was convicted in a separate case of insulting a public prosecutor. Each ruling tightened the legal net around a politician who had seemed poised to challenge the president directly.
Charges and Counter-Charges
Prosecutors insist the case is a straightforward matter of law enforcement, alleging that İmamoğlu led a network that manipulated municipal tenders and channelled public funds to allies and contractors. Government officials maintain that Turkey’s courts operate independently and that no politician is above the law.
Yet human rights groups and opposition leaders argue the prosecution is politically motivated. The case, they say, relies heavily on anonymous witnesses and sweeping accusations that risk criminalising routine administrative decisions.
To them, the trial resembles a familiar pattern seen in other countries where popular challengers find themselves entangled in legal proceedings just as their political prospects begin to brighten.
Democracy Under Scrutiny
For Turkey, the implications extend well beyond one politician’s fate. The country remains a NATO member and a pivotal regional power bridging Europe and the Middle East, yet its democratic credentials have increasingly come under scrutiny in recent years.
The European Parliament and international watchdogs have repeatedly warned that the independence of the judiciary has eroded as executive power has grown. Critics argue that prosecutors and judges now operate in a climate where politically sensitive decisions carry obvious consequences.
The appointment of a senior Istanbul prosecutor involved in opposition cases to a top government position earlier this year only deepened such concerns among Erdoğan’s critics.
The Road to 2028
Presidential elections are formally scheduled for 2028, though Turkey’s constitution allows for the possibility of an earlier vote. Should Erdoğan seek another term, the absence of a credible challenger could reshape the political landscape.
That possibility lends the Silivri trial an air of historic importance. If İmamoğlu is convicted and barred from politics, the opposition could lose its most charismatic figure at a moment when the ruling party is already facing economic pressures and growing urban discontent.
For now, however, Ekrem İmamoğlu remains defiant. From his prison cell he has urged supporters to keep faith in democratic change and insisted the charges against him will ultimately collapse.
Whether the courts agree is a question that may define the next chapter of modern Turkey.
Arrest of Istanbul Mayor Ekrem İmamoğlu Sparks Political Controversy in Turkey
