Why would anyone who is against the killing of innocent unborn babies ever consider voting for Joe Straus? Joe Straus is not pro life. He voted against pro life issues before he became Speaker and enjoyed support from Planned Parenthood. Now that he is the Speaker of the Texas House of Representatives, he does not vote on bills. He certainly has not publicly stood up for pro life issues as Speaker; and in the past as Speaker, he has called it only a "wedge issue."
The pro life legislation that passed in the 2011 Texas Legislative Session passed, not because of him, but in spite of him. Straus did not stand against it because he knew the pro life bills would pass anyway with a super-majority of Republicans in the Texas Legislature. He also did not stand for them though and given different circumstances, like fewer Republicans in the House, I believe Straus would stop playing to the super-majority and play both sides because he will need the Democrats in a split house.
If it was not already clear that abortion is not an important issue for Speaker Joe Straus, then you should take a look at his most recent quote about abortion:
In an article from the Houston Chronicle, Joe Straus brushed off the biggest pro-life bill of 2013 as maybe