A conductive polymer composite includes (A) a π-conjugated polymer and (B) a dopant polymer which contains a repeating unit “a” which is shown by the following general formula (1) having weight-average molecular weight thereof in the range of 1,000 to 500,000, wherein, R1 represents a hydrogen atom or a methyl group; R2 represents a single bond, an ester group, or a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms which may optionally contain any one of an ether group and an ester group or both; Z represents a phenylene group, a naphthylene group, or an ester group; and “a” is in the range of 0