Our Daily Digest is a lunchtime look at the stories we have our eyes on at the Capitol and beyond. Here’s what we are watching today:

The dust is settling from the open carry bill receiving approval from a second chamber, and we’re finally getting an idea of what gun laws could look like in Texas by the end of the session. Tonight, we will look closer at the bill, as well as a controversial amendment to the legislation. And we’ll get reaction to the prospects for more gun legislation like campus carry.

A group of Texas veterans is rallying at the Capitol to support medical marijuana legislation. They’re urging lawmakers to hold a hearing on HB 3785, which would allow medical marijuana in the treatment of post-traumatic stress disorder, severe pain and other medical conditions. It would also direct the Department of State Health Services to establish a tightly-regulated system of licensed marijuana cultivators, processors, and dispensaries.

And Governor Greg Abbott is continuing his series of speaking engagements around Austin. He will deliver remarks at Texas State Technical College’s 50th anniversary celebration at the Hilton Hotel downtown.

Tonight’s guests on “Capital Tonight” are Dr. Jon Olson & Dr. Cliff Frohlich, a petroluem engineer and seismologist working at UT-Austin who participated in a recent study released about hydraulic fracturing, or fracking, in Texas. We’ll discuss their findings, and look ahead to what’s next for oil and natural gas exploration in Texas. Plus, the Quorum Report’s Harvey Kronberg will join us for his weekly analysis. That’s tonight at 7 and 11 p.m. on Time Warner Cable News.