The Fight for Midnight, by Dan Solomon

Alex's only friend is a crotchety old guy at an adult day care center, who delights in being read Game of Thrones (with particular attention to the beheadings).  It's all basically Alex's fault:  he's the one who let his best friend die from drugs and then got himself on the wrong end of two bullies from school.  Still, Alex wouldn't mind having a friend his own age.  So, when queen bee Cassie calls him out of the blue and begs him to come join her at a protest at the State Capitol, he figures he's gotten an opportunity and been granted a wish.  He has no idea what the protest is about and doesn't really care as long as it means spending some time with the girl of his dreams.

That's the set up that places Alex at the Texas statehouse in the summer of 2013 as the Senate debated HB2, a now largely-forgotten attempt to restrict abortion access.  The events are a matter of public record and the book sticks largely to the facts of the case (the author was a journalist covering the protests) so the plot is less important than the story, which tracks Alex's evolution from an apolitical and apathetic young man to a committed activist.  By the end of the story, his personal issues that form such a central role in his life largely fade away in comparison to his investment in the eventual outcome of Wendy Davis's historic filibuster.  Of course, a few years later the repeal of Roe v Wade would largely overtake the now seemingly small fry of that debate, so the novel is really less about any historic achievement than it is about how the events impacted Alex's life.  And that proves to be a surprisingly satisfying read.