bring (someone or something) out in droves
To entice many people or animals to gather or come to a place. (A "drove" is a large number of people or animals moving together.) The owner of the car dealership is optimistic that slashing prices will bring people out in droves.
bring someone or something out in droves
Fig. to lure or draw out people or other animals in great number. The availability of free drinks brought people out in droves. The fresh grass sprouts brought the deer out in droves.