Slovakia's presidential election run-off will be held on March 30 with polling stations opening Saturday at 0600 GMT and closing at 2100 GMT.
Kuciak had written about his alleged murderer on several occasions, accusing him of exploiting his connections to the police to carry out corrupt dealings.
The 28-year-old journalist and his fiancee were shot dead at their home on February 21 last year, sparking protests and leading to the resignation of former prime minister Robert Fico.
Jan Kuciak, who had written about political corruption in Slovakia, was found shot dead along with his fiancee Martina Kusnirova at their home outside Bratislava in February.
Tomas Drucker steps down amid mass demonstrations demanding the resignation of the country's police chief following the murder of Jan Kuciak, a journalist, who focused on corruption issues.
Robert Fico's resignation as prime minister has failed to appease a public outraged over the murder of 27-year-old investigative journalist Jan Kuciak, who reported on fraud allegations against businessmen with political ties.
Slovakian Prime Minister Fico offers to resign amid a journalist's murder scandal. President Kiska says he will entrust the formation of a new government to Deputy Prime Minister Pellegrini.
Kiska said the crisis gripping Slovakia was caused by declining public trust in the state, following the shooting of 27-year-old Jan Kuciak and Martina Kusnirova.
It has been 25 years since Czechoslovakia split into two autonomous states, Czech Republic
French President Emmanuel Macron wants tougher labour laws than proposed by the EU, saying the current system leads to unfair competition and hurts jobs.
Hungary and Slovakia defend their refusal to take in asylum seekers at the European Court of Justice, drawing a clear rebuke from Germany and others who stressed the need for European solidarity.
Europe is increasingly polarised. Euroscepticism is in ascendance amid a push-and-pull between Russia and the West — with many national leaders leaning towards Putin.
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