1. A formal public statement or declaration marking the official start of a political, commercial, or organizational campaign
The candidate made a campaign announcement at the town hall meeting.
O candidato fez um anúncio de campanha no encontro do município.
2. An official communication that introduces or reveals details about an upcoming campaign initiative
The company's campaign announcement included details about the new product launch strategy.
O anúncio de campanha da empresa incluía detalhes sobre a estratégia de lançamento do novo produto.