The district, which previously favored Democrats, now tilts toward Republicans, and some Memphis voters have raised concerns that their representation has been diminished. Cohen's primary challenger, Democratic state Rep. Justin Pearson, then was joined by state Sen. London Lamar in what became a four-person contest. Memphis voters later reelected him. Memphis voters voice dismay over redistrictingFor decades Memphis, the most populous city in Shelby County, formed the base of its own congressional district. Sen. Bill Hagerty is unopposed in this year's Republican primary, though numerous Democrats and independents are battling for the chance to challenge him.