1. Support that comes from a wide range of different groups, sectors, or demographics rather than from a limited or narrow constituency
The new policy has broad-based support across both political parties.
A nova política tem apoio de base ampla em ambos os partidos políticos.
2. Widespread backing or endorsement from diverse sources
The candidate won the election with broad-based support from urban and rural voters alike.
O candidato venceu as eleições com apoio de base ampla tanto de eleitores urbanos quanto rurais.