Mr Cooke, who was formerly Mr Donato's senior electorate officer in Orange, was second on the SFF ticket for the upper house vote.
One seat flowed SFF's way, which went to Mark Banasiak, who will join current member Robert Bursak.
I'm interested in pursuing a political career and if the party wants to nominate me for future elections I'd be honoured to be selected.Brett Cooke
Mr Cooke said the results had showed a near 40 per cent boost to the SFF primary vote, which he said was a positive.
He said he would be open to other opportunities to enter politics, saying he would meet with party officials this week as the SFF tried to organise its senate candidates for the May 18 federal election.
"I'm interested in pursuing a political career and if the party wants to nominate me for future elections I'd be honoured to be selected," he said.
One Nation won a second seat, ending a three way tussle over the final upper house seat between the Christian Democrats, One Nation and Liberal Democrats and former federal senator David Leyonhjelm.
Mr Cooke said the addition of the two One Nation seats made his party a "moderate" voice in the upper house.
Of the 21 seats on offer on March 23, the Animal Justice Party picked up one and One Nation two.
The coalition are left with 17 of the 42 seats in the chamber.
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