Six-term U.S. Rep. Doug Lamborn of Colorado Springs should be kept off the Republican primary ballot this year, the Colorado Supreme Court ruled Monday in a decision that — if upheld — could end the longtime conservative lawmaker’s congressional career.

The ruling finds in favor of a lawsuit that contended Lamborn didn’t properly petition his way onto the ballot because of problems with those he hired to gather signatures for his re-election bid.

Reached by phone, Lamborn said “we’re still digesting the opinion” and then he hung up.

Contacted a second time, Lamborn said “we’re still looking at the language,” urged a reporter to contact his press secretary and then hung up again.