With less than a month until Election Day, Colorado's registration rolls include as many as 6,000 felons who should be ineligible to vote. Election officials have failed to prevent state prisoners and parolees from registering or casting ballots. Records show felons have voted as recently as the August primary, despite a law forbidding it. Secretary of State Donetta Davidson said she was unaware of potential problems until she was asked about a Denver Post comparison of voter registrations to felons currently in the Department of Corrections system. "Did I look at it when I took office? No. Could I have...