Many experts are forecasting the end of a key provision of election law — enabling Republicans to shore up their advantage in the House, according to a new report. Democratic voting rights groups are preparing for a nightmare scenario if the Supreme Court guts a key part of the landmark civil rights-era legislation, the Voting Rights Act — a very real possibility this term. Ahead of the court’s Oct. 15 rehearing of Louisiana v. Callais — a case that has major implications for the VRA — two voting rights groups are sounding the alarm, warning that eliminating Section 2, a...