The Conservatives raised over $4.4 million between April 1 and June 30, while Liberals raised nearly $2.8 million and New Democrats received almost $1.2 million in contributions.
Financial returns filed with Elections Canada also lay out contributions to the Conservative federal leadership candidates during the second quarter, which totalled over $8 million.
Front-runner Pierre Poilievre received the most contributions of the candidates running for leadership of the party.
Poilievre raised just over $4 million, while former Quebec premier Jean Charest raised almost $1.4 million for the race.
The Conservatives will announce the winner of the leadership race on Sept. 10.