Ongoing talks on forming a new Dutch cabinet switched to a country estate on Thursday and will continue until Friday afternoon.

The leaders of the three parties involved in the discussions, and chief negotiator Rianne Letschert, moved camp to the Zwaluwenberg estate near Hilversum to take a final decision on what sort of coalition government the Netherlands will have.

The main question facing Rob Jetten (D66), Henri Bontenbal (CDA) and Dilan Yeşilgöz (VVD) is whether or not to involve far-right party JA21 in the negotiations.

Yeşilgöz has refused to consider an alliance with the GroenLinks-PvdA left-wing grouping – which won 20 seats in the October general election – and is keen to include JA21, which won nine seats.

Jetten, whose party was the biggest at the general election, is not keen on including the far-right party because D66 would then be the only progressive party in the cabinet.

D66 insiders say that involving JA21 would not advance policy on defence, Europe, nitrogen-based pollution, climate change and the rule of law.

At the same time, support from the GL-PvdA alliance is seen as essential in the upper house of parliament, where it is the biggest party. That, according to an analysis by Nu.nl, makes a minority cabinet 99.9% definitive.

Letschert has said she wants a final decision on the type of cabinet by the end of the week.