The midterm elections are four weeks away. Senate control is on the line, and races in battleground states are tightening. Few things say “close election” like an October surprise. The one getting the latest buzz this election cycle comes from Georgia, courtesy of Republican senatorial candidate Herschel Walker. Vox politics reporter Li Zhou (@liszhou) explains the race, and Rutgers professor David Greenberg (@republicofspin) tells us the origin of the October surprise. References: Herschel Walker is an epically flawed candidate. He could still win.  Hosts: Jonquilyn Hill (@jonquilynhill) Credits: Sofi LaLonde, producer and engineer Libby Nelson, editorial adviser A.M. Hall, deputy editorial director of talk podcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices