I can see why certain Berniecrats would want to put their support behind Tulsi for "higher office". She is the more attractive, pleasant speaking version of Bernie Sanders. However, Tulsi probably already knows that other sects of the Democratic party are already working on more high-profile individuals like Elizabeth Warren. Along with that, other pretenders to the throne of public opinion, such as Maxine Waters is also making big noise that certain Berniecrats and never-Trumpers are both listening and repeating in social forums. 

So for Tulsi, to move beyond what she is right now, a curious political novelty, she will need to do way more than look nice on Fox and CNN and state peace nick statements. 

After all, it took him moving from Hawaii and becoming a player in Chicago machine politics before Barack H. Obama became a Senator, and then President of the United States.