Turkey’s escalating crackdown on the CHP illustrates how President Erdoğan’s consolidation of power is accelerating the country’s democratic decline and weakening the rule of law.

The Republican People’s Party (CHP), Turkey’s principal secular opposition party, is now at the center of one of the most consequential political crises in the country’s modern history. The crisis stems from an unprecedented court ruling issued on May 21, which invalidated the party’s 2023 leadership election and plunged Turkey’s already fragile democratic system into deeper uncertainty. What followed was a remarkable and alarming confrontation between the state and the opposition. Turkish riot police entered CHP headquarters in Ankara to remove party officials from office. Tear gas and rubber projectiles were reportedly used inside the building, where party leaders, members, and supporters, including CHP chair Özgür Özel, remained confined for days.

The standoff came only days after a court nullified Özel’s election as party leader, a move widely viewed by critics as politically motivated. Human Rights Watch accused the government of President Recep Tayyip Erdoğan of attempting to “sideline the main political opposition in ways that profoundly undermine civil and political rights and Türkiye’s democratic process.” What might once have seemed unthinkable in a country that still formally conducts competitive elections has become increasingly familiar: the use of state institutions to weaken political rivals and narrow the space for democratic opposition.

Founded in 1923 by Mustafa Kemal Atatürk, the architect of the modern Turkish Republic, the CHP has long occupied a unique place in the country’s political landscape. A center-left and social democratic party, it is not a fringe movement operating outside the political mainstream. It is, in many respects, one of the institutions upon which the Republic itself was built. Yet since 2024, the CHP has faced an unprecedented legal and political campaign. Hundreds of party members and elected officials have been detained on corruption and other charges that they categorically deny.

Among those arrested is Istanbul Mayor Ekrem İmamoğlu, widely regarded as Erdoğan’s most formidable political challenger and the CHP’s leading presidential contender. His detention shocked many observers because it targeted a politician with broad national appeal and a demonstrated ability to defeat Erdoğan’s allies at the ballot box. The campaign against the CHP is historically significant precisely because of who the party is. Throughout the history of the Turkish Republic, Kurdish political movements and various left-wing organizations have often borne the brunt of state repression. The CHP, by contrast, is the party founded by Atatürk himself. The fact that it is now facing similar pressures underscores how dramatically Turkey’s political environment has changed.

At the same time, Erdoğan’s government has continued its long-standing campaign against Kurdish opposition figures. Selahattin Demirtaş, widely considered one of Turkey’s most charismatic opposition politicians, has remained imprisoned since 2016 alongside numerous other Kurdish political leaders. As the former co-chair of the pro-Kurdish Peoples’ Democratic Party (HDP), Demirtaş became one of the most prominent critics of Erdoğan’s rule. His prolonged incarceration has become a symbol of the shrinking space for political dissent in Turkey.

The state’s approach toward Kurdish municipalities has followed a similarly coercive pattern. For years, the government has removed elected mayors from office and replaced them with state-appointed trustees, known as kayyum, in municipalities won by the HDP and its successor, the Democracy Party (DEM). Often, these mayors are dismissed within months of taking office on terrorism-related allegations, after which government administrators assume control. Critics argue that this practice has effectively nullified the electoral choices of millions of voters in predominantly Kurdish regions.

The use of terrorism allegations has become one of the state’s most powerful political tools. While international attention often focuses on high-profile figures such as Demirtaş or businessman Osman Kavala, the reach of these investigations extends far beyond well-known dissidents. Millions of ordinary citizens, including teachers, academics, civil servants, journalists, activists, and small business owners, have at some point faced scrutiny under Turkey’s expansive anti-terror laws. The result is a climate in which political expression, civic engagement, and even routine criticism of government policy can carry significant personal risk.

Over the past two decades, Turkey’s political system has undergone a gradual but profound transformation. What was once an imperfect but competitive democracy increasingly exhibits the characteristics of an entrenched authoritarian regime. Erdoğan’s government exercises extensive influence over much of the country’s media landscape, while critics contend that judicial independence has been systematically eroded. Independent civil society organizations face mounting pressure, protests are frequently restricted, and Turkey remains one of the world’s leading jailers of journalists.

As political freedoms have deteriorated, threats directed at opposition figures have intensified. International observers have described a near-collapse of judicial independence, noting that thousands of judges and prosecutors have been dismissed, investigated, or prosecuted, only to be replaced by individuals viewed as loyal to the ruling establishment. Such developments have raised concerns that courts are no longer functioning as independent arbiters of the law but instead as instruments of political power.

The European Court of Human Rights has repeatedly ruled against Turkey in landmark cases, identifying systemic violations that include infringements of fair trial rights, unlawful detentions, and instances of inhuman or degrading treatment. Yet many of these rulings remain only partially implemented or ignored altogether. For critics, this pattern reflects a broader erosion of legal accountability and a growing willingness by the government to disregard both domestic and international legal constraints.

The concentration of power under Erdoğan has not occurred solely through prosecutions and arrests. It has also been facilitated by constitutional and institutional changes that fundamentally altered the structure of Turkish governance. Constitutional amendments introduced in 2010 began shifting the balance of power away from traditional parliamentary mechanisms. That process accelerated dramatically following the 2017 constitutional referendum, which replaced Turkey’s parliamentary model with an executive presidency possessing far fewer institutional constraints.

The new system significantly expanded presidential authority while weakening traditional checks and balances. Parliament retained formal powers but lost much of its practical influence over governance. Executive authority became increasingly centralized in the presidency, limiting the ability of opposition parties to shape policy or effectively oversee other branches of government, even when they maintained substantial parliamentary representation.

Supporters of the system argued that it would streamline decision-making and improve governmental efficiency. Critics contend that the opposite has occurred. They point to the rise of patronage networks, increased political favoritism, and the concentration of decision-making in the hands of a small circle surrounding the president. According to these critics, one-man rule has hollowed out institutions that once provided oversight and accountability, while clientelism has deepened inefficiencies rather than solving them.

Ironically, the latest crackdown on the CHP may be producing an outcome the government did not intend. Rather than further fragmenting the opposition, it appears to be encouraging greater cooperation among political forces that have often struggled to work together.

The Peoples’ Equality and Democracy Party (DEM Party), Turkey’s third-largest political party, strongly condemned the court ruling against the CHP and described the police operation targeting the party’s headquarters as a “disgrace to democracy.” The statement reflected growing concern that the government’s actions are not simply directed at a single opposition movement but at the broader principle of political competition itself.

Even Abdullah Öcalan, the imprisoned founder of the Kurdistan Workers’ Party (PKK), criticized the police intervention at CHP headquarters. He described the events as evidence of the absence of a properly functioning democratic system and warned that democratic politics cannot survive when opposition parties are subjected to such treatment. Although Öcalan remains a deeply polarizing figure, his remarks underscored the extent to which concerns about democratic backsliding now cut across ideological and political divides.

Despite the severity of these developments, international responses have remained muted. Turkey’s strategic importance, situated at the crossroads of Europe, the Middle East, the Black Sea, and the Eastern Mediterranean, has often shielded its government from sustained external pressure. As a NATO member and a critical partner in regional security, migration management, and energy transit, Turkey occupies a position that many governments are reluctant to jeopardize.

International organizations and democratic governments frequently express concern over democratic erosion in Turkey, yet few have demonstrated a willingness to significantly alter their relationships with Ankara as democratic standards continue to decline. This reluctance has contributed to a sense that the costs of repression remain manageable for the Turkish government.

Under such circumstances, further pressure on opposition parties appears likely. The consequences extend beyond Turkey’s domestic political future. The country’s trajectory raises broader questions about the resilience of democratic institutions, the effectiveness of international human rights mechanisms, and the willingness of democratic states to defend the principles they profess to uphold.

The crisis unfolding in Turkey is therefore more than a national political struggle. It represents a challenge to the credibility of the international human rights system itself. When governments can openly disregard legal norms, judicial independence, and binding international judgments without meaningful consequences, the broader architecture designed to protect rights and democratic governance is weakened. The Turkish opposition’s fight is not only about preserving democratic competition within Turkey. It is also part of a wider global struggle over how democracies respond when elected leaders gradually transform political systems into vehicles for increasingly unchecked power.