[Kevin]

My 80+ and even 90+ year old grandmothers both had no trouble voting.

Hell, my 80+ year old maternal grandmother even continued to vote while in the throes of dementia.

That said, I'm just not overly impressed with this argument. It doesn't take a rocket scientist to obtain a birth certificate. You go down to the Department of Vital Statistics, take your little number and wait for it, pay the fee and they print it for you. In Oklahoma, a bank or utility bill will work as ID to obtain a birth certificate. These are things responsible adults keep around. If you lose it, no matter what your age, that's not something responsible adults do. If you are ever not able to prove who you say you are, you've placed yourself in a potentially pretty bad situation.