Lucky for me in my case, I only need to renew every 8 years, but it is the same process as getting a new one (minus the drivera test). But yes, point being, the question here is not really about renewing a drivers license. Those who need to renew are already pretty well covered. Its more about those who are brand new (young people) or those who might be too old for a license in the first place. It's also about the number of people who don't know that they need the new id, the college students who keep their home id but still have a right to vote, and any bias that in aggregate may help or hurt one group of otherwise eligible voters more than another. Lastly, it's also about the logistics, how many fraudulent votes we think it might prevent, and how many legitimate votes might be lost.