raft/rawnode.go
func (rn *RawNode) Campaign() error {
	return rn.raft.Step(pb.Message{
		Type: pb.MsgHup,
	})
}
func (rn *RawNode) Campaign() error {
	return rn.raft.Step(pb.Message{
		Type: pb.MsgHup,
	})
}
func ( rn * RawNode ) Campaign ( ) error { return rn . raft . Step ( pb . Message { Type : pb . MsgHup , } ) }
// Campaign causes this RawNode to transition to candidate state.
Campaign causes this RawNode to transition to candidate state .