KANSAS CITY, Mo. — Citing a wave of angry backlash, a Kansas man on Friday withdrew a petition in which he argued that President Obama should be removed from the state’s election ballot because he did not meet citizenship requirements.

The challenge filed this week by Joe Montgomery of Manhattan, Kan., prompted state election authorities to seek a certified copy of Mr. Obama’s birth certificate and reignited long-running conspiracy theories that the president was not born in the United States. The state will continue to try to obtain the birth certificate, and officials will meet on Monday as scheduled to close the case officially. But without the petition, Mr. Obama will remain on the ballot, Secretary of State Kris W. Kobach told The Associated Press.

Mr. Montgomery, the communications director for the Kansas State University College of Veterinary Medicine, explained his decision in an e-mail to Mr. Kobach.

“There has been a great deal of animosity and intimidation directed not only at me, but at people around me, who are both personal and professional associations,” he wrote. He added that he did not “wish to burden anyone with more of this negative reaction.”