Des Moines, Iowa ? Former U.S. House Speaker Newt Gingrich said Monday he’s seriously considering seeking the Republican presidential nomination and will announce his decision early next year.

Gingrich, 67, told The Associated Press that he would focus on helping Republican candidates through the midterm elections in November, then decide in February or March whether to seek the GOP nomination.

“I’ve never been this serious,” Gingrich said.

“It’s fair to say that by February the groundwork will have been laid to consider seriously whether or not to run,” he said.

Gingrich, in Des Moines for a fundraiser and workshop for local Republican candidates, predicted President Barack Obama would be a one-term president. Obama’s poll numbers have dropped below 50 percent, and Gingrich predicted they would continue to fall, making him vulnerable in 2012.

Unlike President Bill Clinton, who rebounded from first-term problems by pushing for welfare reform and budget balancing changes that pleased moderate voters, Gingrich argued that Obama shows no inclination to move toward the center.