Komunikasi politik challenger dan incumbent (studi kasus politik pencitraan Susilo Bambang Yudhoyono Sebagai challenger pada pemilihan Presiden 2004 dan incumbent pada pemilihan Presiden 2009 ) = Political communication for challenger and incumbent (study case on image politics over Susilo Bambang Yudhoyono as challenger on the 2004 Presidential election and as incumbent on the 2009 Presidential election)