A conductive polymer doped with a polyacid copolymer represented by the following Chemical Formula 1: wherein, in Chemical Formula 1, A is a carbon-based group, and is selected from the group consisting of a substituted or unsubstituted C1 to C30 alkyl group; a substituted or unsubstituted C1 to C30 heteroalkyl group; a substituted or unsubstituted C1 to C30 alkoxy group; a substituted or unsubstituted C1 to C30 heteroalkoxy group; a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C6 to C30 arylalkyl group, a substituted or unsubstituted C6 to C30 aryloxy group, a substituted or unsubstituted C2 to C30 heteroaryl group, a substituted or unsubstituted C2 to C30 heteroarylalkyl group; a substituted or unsubstituted C2 to C30 heteroaryloxy group; a substituted or unsubstituted C5 to C20 cycloalkyl group; a substituted or unsubstituted C2 to C30 heterocycloalkyl group; a substituted or unsubstituted C1 to C30 alkylester group; a substituted or unsubstituted C1 to C30 heteroalkylester group; a substituted or unsubstituted C6 to C30 arylester group; and a substituted or unsubstituted C2 to C30 heteroarylester group, B is an ionic group or a group including an ionic group, wherein the ionic group include a pair of a cation and an anion, the cation is a metal ion of Na +, K +, Li +, Mg 2+, Zn 2+, or Al 3+, H +, NH 3 +, or an organic ion of CH 3 (-CH 2 -) n (n is a natural number of 1 to 50), and the anion is PO3 -, SO 3 -, COO -, I -, or CH 3 COO -, C is the cation of an organic ion salt including an anion and a cation, R1 to R4 are the same or different, and are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C1 to C10 alkyl, a substituted or unsubstituted C6 to C20 aryl, and a substituted or unsubstituted C3 to C20 heteroaryl, 0<m ≤ 10,000,000, 0<n<10,000,000, and 0.0001 ≤ m/n ≤ 100, wherein C is one of the following Chemical Formulae 2 to 5: wherein, in Chemical Formulae 2 to 5, one of R5 to R6 is selected from the group consisting of a substituted or unsubstituted C1 to C30 alkylene group, a substituted or unsubstituted C1 to C30 heteroalkylene group, a substituted or unsubstituted C1 to C30 alkoxylene group, a substituted or unsubstituted C1 to C30 heteroalkoxylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C6 to C30 arylalkylene group, a substituted or unsubstituted C2 to C30 heteroarylene group, a substituted or unsubstituted C2 to C30 heteroarylalkylene group, a substituted or unsubstituted C5 to C20 cycloalkylene group, and a substituted or unsubstituted C2 to C30 heterocycloalkylene group, and is bound to a main chain at its one end, and the rest one of R5 to R8 is the same or different is independently selected from the group consisting of hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C30 heteroalkyl group, a substituted or unsubstituted C1 to C30 alkoxy group, a substituted or unsubstituted C1 to C30 heteroalkoxy group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C6 to C30 arylalkyl group, a substituted or unsubstituted C6 to C30 aryloxy group, a substituted or unsubstituted C2 to C30 heteroaryl group, a substituted or unsubstituted C2 to C30 heteroarylalkyl group, a substituted or unsubstituted C2 to C30 heteroaryloxy group, a substituted or unsubstituted C5 to C20 cycloalkyl group, a substituted or unsubstituted C2 to C30 heterocycloalkyl group, a substituted or unsubstituted C1 to C30 alkylester group, a substituted or unsubstituted C1 to C30 heteroalkylester group, a substituted or unsubstituted C6 to C30 arylester group, and a substituted or unsubstituted C2 to C30 heteroarylester group, X of X- is selected from the group consisting of F, Cl, Br, I, BF 4, PF 6 and (CnF 2n+1 SO 2) 2 N (n is a natural number of 1 to 50), Y is selected from the group consisting of -CH 2 -, -CR'R"-, -NH-, -NR'-, -O-, - P-, -P=O-, -S-, and -SiR'R"-, wherein R' and R" are the same or different and are independently selected from the group consisting of hydrogen, a substituted or unsubstituted C1 to C10 an alkyl, a substituted or unsubstituted C6 to C20 aryl, and a substituted or unsubstituted C3 to C20 heteroaryl, h is an integer of 1 to 3, i is an integer of 1 to 8, j is an integer of 1 to 10, k is an integer of 1 to 4, and I is an integer of 1 to 4.