in the lead is an adjective and adverb meaning "having the leading position or higher score in a contest". It carries 2 recorded senses.
leading or ahead in a competition
“the horse was three lengths ahead going into the home stretch”
“ahead by two pawns”
“our candidate is in the lead in the polls”
“way out front in the race”
“the advertising campaign put them out front in sales”
Definitions, synonyms and semantic relations for in the lead come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.