Even though Rep. Riddle isn't my district, I've called her office and got a kind of wishy-washy response. Apparently she "isn't ready to take a stance" on this issue, and when I asked for them to call/mail/email/fax me any information when she *does* decide to take a stance on it, they "have no idea how long it will take until she *does* take a stance."
I've also called the local and capitol offices of Rep. Coleman (D) and Sen. Ellis (D) for my district and asked for a response to the letters I'd already sent them but not received a reply. The staffers didn't seem to know what OC was, so I take it they haven't received any calls about the issue. I believe I managed to impress them *somewhat*, as I was told they'd set up a meeting to discuss the issue. Maybe some folks from the 2A Dems / TX Democrat Gun Owner's Caucus can help out?