lose ground
US /luːz ɡraʊnd/
UK /luːz ɡraʊnd/

1.
perder terreno, perder popularidad
to become less popular or successful
:
•
The company started to lose ground to its competitors.
La empresa empezó a perder terreno frente a sus competidores.
•
The candidate is losing ground in the polls.
El candidato está perdiendo terreno en las encuestas.