Political buffs are holding their collective breath at the outcome of voting for the Territory's giant bush seat of Lingiari today.

Betting agency Sports Bet has the two main contenders neck and neck this morning, at $1.85 each.

Long-standing Labor incumbent Warren Snowdon suffered huge swings against him in remote areas in the last federal election, which he partly attributed to disillusionment about the Federal Intervention and the Territory Government's changes to local government.

Today he's being circumspect about his chances of retaining the seat, and says it'll be a tough election to win.

"It's a very diverse electorate," Mr Snowdon said.

"There are a number of different organisations and parties who are contesting.

"That could have an impact on how the vote goes.

"You know there are some open questions here, so I'm looking forward to the count and I hope at the end of the evening I am successful."

He holds the seat by a margin of 3.7 per cent.

He is facing a tough battle with Country Liberals candidate Tina MacFarlane, a pastoralist from the Northern Territory's Top End.

Ms MacFarlane cast her vote at the Lingiari polling booth at Berry Springs, in Darwin's rural area.

She says the response from the enormous electorate has been overwhelmingly positive.

But she won't speculate yet on the result - though she says, if she does win, the first thing she'll do is thank her family.

Meanwhile voters in Alice Springs have mixed feelings as they file in to fill their ballot papers.

"They're spending more time fighting among themselves than they have been worrying about what's been going on in the country," one said.

Others have been looking closely at the performance of the local Territory politicians in making their decisions about this federal election.