Libertarian Party presidential candidate Bob Barr will go to federal court in an effort to get on Oklahoma's election ballot this year, he said today. Barr, a former Republican congressman, failed to obtain the minimum 43,913 signatures needed to qualify for the Oklahoma ballot as an independent candidate for president. James C. Linger, Tulsa, attorney for Barr, said fewer than 10,000 signatures were collected in Oklahoma on Barr's behalf before today's deadline. Linger said he plans to file the lawsuit in federal district court in Oklahoma City. Barr, who served in the U.S. House of Representatives from 1994 to 2003, was selected by the Libertarian Party earlier this year as its candidate for president. The Libertarian Party is not officially recognized in Oklahoma so Barr would have to run as an independent presidential candidate if he can get on the Oklahoma election ballot.