As of november 2015, there have been amendments to the texas constitution, but only amendments to the u. s. constitution.

As of november 2015, there have been 673 total amendments to the texas constitution, but only  seventeen amendments to the u.s. constitution.
Amendments are the changes or revision in the original constitution. From 673 total amendments to the constitution of Texas only 491 have been adopted, and 179 have been defeated by voters of Texas.