A push-button switch including a keytop plunger, a base structure for retaining and guiding the keytop plunger, a biasing contact member, and flexible wire contacts. The biasing contact member is a leaf spring mounted in the base structure and actuated into a bowed position by depression of the keytop plunger. The flexible wire contacts are also mounted in the base structure and are engaged by the leaf spring when it is bowed. The complete structure is mounted on a printed circuit board with the leaf spring and wire contacts connected to their respective contact leads on the PC board.