Though he’s 30 points down in a head-to-head match up with Gov. Andrew Cuomo, Republican candidate for governor Rob Astorino on Thursday insisted he’s running a campaign that has a shot at winning.

A Siena College poll this week found Astorino trailing Cuomo 58 percent to 28 percent.

With a Working Families Party candidate in the race, Astorino falls to 24 percent, with 39 percent for Cuomo.

In an interview with Fred Dicker on Talk-1300, the Westchester County executive dismissed the poll’s results as far too early to matter.

“Head to head doesn’t mean much to me at this point,” he said.

Nevertheless, he noted there are trouble signs in recent voter surveys for the incumbent governor when it comes to voters’ reactions on the economic and jobs-related issues.

“They don’t like who Andrew Cuomo is now that the curtain has been pulled back,” Astorino said. “They know this state is in a death spiral.”

He noted last month’s jobs numbers showed a slight dip in unemployment in the state, especially north of New York City.

(To be fair, unemployment has dropped over all during Cuomo’s tenure as the nation began its recovery from the great recession. Unemployment in December 2010 stood at 8.2 percent, the rate last month was 6.9 percent).

The labor statistics will be pinned on Cuomo, Astorino said.

“They’re really starting to understand New York is in decline, serious decline, and this governor is managing that decline,” he said.

But Astorino’s main argument is that he’s running a credible campaign.

Consider that in 2010, Republicans nominated Carl Paladino, who despite channeling tea party fueled anger at state government, was crushed by Cuomo in November. The Paladino campaign, too, was not without multiple bumps in the road.

“We’ll have a real competitive race and we’ll be in it at the end with a chance to win,” Astorino said. “That’s really all you can ask as a challenger.”