Mr Roberts joins NSW One Nation leader and running mate Mark Latham in taking a seat in the Legislative Council.

This now comprises 17 coalition MPs, 14 Labor MPs and an 11-member cross bench, including two One Nation members and three Greens.

Disillusionment with politics at both state and federal levels led Mr Roberts, a former police officer, to join Pauline Hanson's party and throw his hat in the ring for a seat in the NSW Upper House and it has paid off.

Mr Roberts said he was "frazzled" by today's events and said it was quite nerve-wracking to be sitting there waiting for the computer to determine who had got in.

"The computer takes an hour to process all the permutations because of the size of the ballot paper for the Upper House. There were something like 340 candidates, so it takes that long to work out the preferences," he said.

"The unsuccessful candidates come out first and David Leyolhelm was dismissed as was Paul Green, but my name popped out as successful."

He said he would remain based in Goulburn and that it was a great result for the city.

"We have an office in Macquarie Street in the NSW Parliament House and because we do not have an electorate as such, my electorate is all of NSW, I will also work from home," he said.

"We will stay in Goulburn because this is our home. I will still be the same Rod Roberts drinking coffee at the Greengrocer with my mates.

"It is great for Goulburn to have a second person from the electorate in the parliament. If there is something needed in Goulburn then there will be two voices calling for it now (mine and Wendy Tuckerman's) - so it is a great outcome for the city."

He said his main objective in parliament would be to ensure equity between the city and the country.

"The rural areas have been neglected and that was reflected in the state election where the Nationals lost a number of seats in the bush, particularly Barwron and Murray, to the Shooters, Fishers and Farmers - those people who have been loyal voters are sick of being taken for granted," he said.

"Being a country boy, I have a strong allegiance to rural areas. I want to ensure equity and I want to see us in the country getting our fair share - that is my main thing."

He said it is now likely that One Nation would hold the balance of power in the Upper House and that this was both an honour and an incredible responsibility.

"I will sit down with Mark Latham in the next few days and formulate what we are going to do, but it appears that we will be holding the balance of power, which is a good position to be in, but also an onerous position because it is not to be taken lightly," he said.

"I want to work with all sides. I don't want to be obstructionist, I just want good common-sense governance for all of NSW."

He said despite a poll just before the election showing One Nation had only 2 per cent of the vote, they actually got about 7pc of it.

"Mark and I polled nearly 7pc - so that just shows that polls are unreliable. We polled well-enough to get two elected and it was the first time in 20 years that we had stood candidates in NSW and we came from a zero base so it was a great result," he said.