More than 94 percent of registered voters in Texas apparently did miss it. How many of us never even knew about the election is a little harder to quantify, but I'd wild-guess that a majority did not.
Statewide, we were voting on seven amendments to the State Constitution, mostly on matters designed to be kept obscure and off most voters' personal radar. The voters approved all seven. Turnout rates for the various ballot questions ranged from 5.56 to 5.77 percent, so the IDK vote represented a substantial portion of those who did bother to vote.
At least there was some variation in the percentages voting Yes, so it doesn't look as if those who showed up just looked at the deliberately deceptive ballot language and said, "Yeah, whatevs." Perhaps some informed voters found resources that recommended against some of the propositions on the state ballot, and they voted accordingly.