Lawmakers insisted that the ballots be returned by traditional mail to prevent hackers from gaining access to them.
Soldiers deployed overseas would have a better shot at voting back home under one of several high-profile measures that passed in this year's legislative session.
Secretary of State Alison Lundergan Grimes, the state's chief election official, pressed for the legislation that allows military personnel to receive ballots via the Internet in an effort to speed up the process. Lawmakers insisted that the ballots be returned by traditional mail to prevent hackers from gaining access to them.
Grimes said about 300 overseas ballots arrived back in Kentucky too late to be counted in last year's elections.
Lawmakers also passed a bill that would reform the financially troubled pension plans for government retirees. And they passed a measure to allow a Christians-only health plan to operate in Kentucky.