Support for the right-wing Liberal party VVD has taken a knock in the latest poll of polls, which gives the party of prime minister Mark Rutte 17.3% to 20% of the vote if there were a general election tomorrow.

Despite the recent drop – equivalent to up to four seats in the 150 seat parliament – the VVD remains well clear of the anti-immigration party PVV and the left-wing green party GroenLinks, both of which have 10% to 12.7% support in the new poll.

The Christian Democrats and Labour are both on 8.7% to 11.3% while the nationalist Forum voor Democratie is in sixth place on 8% to 11.3%.

Compiler Tom Louwerse says the four different opinion barometers which he uses to put together the poll of polls have wildly differing results when it comes to the drop in VVD support, but that the trend is clearly downwards.

It is unclear what the impact of Rutte’s support for reducing the speed limit and other measures to cut nitrogen compound pollution is. According to research by EenVandaag, up to one third of VVD voters may be opposed to the speed limit reduction.

At the same time, the PVV has gained the equivalent of two parliamentary seats in the latest compilation, and is now heading back at its level at the March 2017 general election.

‘The row which engulfed Forum voor Democratie in the summer would appear to have made the PVV an option again for the right of the VVD,’ Louwerse told broadcaster NOS.