Today, Sen. Raphael G. Warnock (D-Ga.) and Republican challenger Herschel Walker, the former football star, face off in one of the most anticipated debates in the midterm elections — a race that could tip the balance of party control in the U.S. Senate. The evening encounter in Savannah, Ga., is the latest in a string of debates in marquee Senate races, including one Thursday night in Wisconsin that quickly turned personal between Sen. Ron Johnson (R-Wis.) and Democratic challenger Mandela Barnes.
