That's what they say at the Brew Bar in Tuggeranong, a Canberra business that relies more heavily than most on a public service customer base.

Brew Bar on Reid Street is where the FaHCSIA crowd flock for their morning and afternoon pick-me-up and its sister outlet at the Hyperdome shop is a mecca for Java-loving bureaucrats from several agencies and departments as well as thirsty shoppers.

But the coffee shops' owner, Peter Giannitsios, who employs 32 workers at his two sites, isn't worried by dire predictions of economic apocalypse for Canberra after next week's election.

Sure, he has noticed things have slowed a little in the four weeks since the election was called, but he remains an optimist.

With 50 per cent of his customers at Reid Street coming from the public service, is he worried about a downturn when the Coalition wields the axe?

"Not necessarily, it's the normal process that people go through," Mr Giannitsios said.

"There will be a little bit of business hurt. People are worried, they're watching their breaks, how much time they spend on coffee and in coffee shops and at the same time, they're watching their dollars because coffee is not really the cheapest alternative any more.

"I'm sure it will have some sort of impact but we have to be alert and … keep an eye on our business and hopefully it will blow over in a little while and people will get confident again and it will be OK."

Despite noticing a small decline in business that seemed to begin about the time Prime Minister Kevin Rudd called the election, Mr Giannitsios believes the future is bright, whoever wins next Saturday. "It's a current thing, we've noticed, since the election was announced, a small decline," he said.

"Based on that, based on the winter period, based on a lot of things it has been a little bit quieter than normal.

"But overall, I'm optimistic."

After all, everyone knows that the Australian Public Service could not function without a reliable supply of decent coffee, and Brew Bar reckons it will keep coming.

"It doesn't necessarily have to be the best but it's very consistent and we're very passionate about our coffee," the cafe owner said.