Why the House is to blame for the Senate’s polarization

Anyone observing the US Senate recently would have noticed that it has become a more ideologically extreme place, something that has also been confirmed by academic studies. But why is the Senate now exhibiting the same extreme behavior and polarization that the House of Representatives is well known for? In new research, Jordan Ragusa argues that much of the Senate’s polarization is due to the fact that it has some of the same members as the House. He writes that lawmakers learn extreme behaviors in the House that continue with them once they are elected to the Senate.