A new poll shows Rep. Lee Terry, R-Neb., handily leading his Republican challenger, with a little over a month left before the GOP primary.

The automated poll, which was commissioned by Terry’s opponent, Dan Frei, and conducted by JMC Analytics and Polling, shows 40 percent of respondents would support Terry if the primary were held today. Twenty-six percent support Frei, with 34 percent undecided.

The survey polled 599 registered Republicans in Terry's Nebraska district “who have demonstrated a tendency to participate in Republican primary/ies.”

Forty percent of likely voters favor Terry’s re-election and 43 percent oppose it. But among voters who have cast a ballot in the last 5 Republican primaries, 53 percent favored Terry’s re-election and 28 percent opposed.

The primary will be held May 13.

Frei’s latest FEC filing shows that his campaign committee has raised $12,710 in total funds, $10,000 of which came from the candidate himself. Meanwhile, Terry has nearly $800,000 on hand.

A Frei spokesman said his camp is pleased with the poll results.

“We think it’s outstanding, because it reaffirms what we find,” said campaign manager Scott Petersen. “Everything we’re finding out there is confirmed by that poll, which is people in Nebraska are ready for new leadership.”

Terry’s camp said the poll only reinforced his standing as the front-runner.

"Even if you take Frei's poll at face value, Lee Terry is polling above 53 percent among the group of voters that Frei himself has identified as the most likely to vote,” said a spokesman. "It's never a good sign when a campaign has to put internal numbers out showing they are at a double-digit deficit and try to convince people that somehow those numbers mean they are at an advantage."

This story was published at 2:17 p.m. and has been updated.