Recent polling in Michigan’s Republican gubernatorial primary shows U.S. Representative John James maintaining a modest lead over businessman Perry Johnson among likely voters, driven by James’s congressional experience, military background, and party establishment ties. Johnson has narrowed the gap through substantial self-funding and a multimillion-dollar advertising push, though internal party criticism of James for skipping recent debates has created uncertainty ahead of the August 4 primary. Dueling legal challenges over petition signatures for both leading candidates add procedural risk that could influence ballot access and voter perceptions. Lower-polling contenders such as former Attorney General Mike Cox trail due to limited recent momentum, while the market pricing reflects trader emphasis on campaign resources and name recognition as the key variables heading into summer.