This review examines the potency of electroanalytical techniques for the direct evaluation of antioxidant activity and total polyphenol content of wines, and the detection and the quantification of individual polyphenols in these samples. We summarize and critically discuss voltammetric approaches using carbon-based and metallic electrodes and biosensors, and their coupling to flow systems (e.g., flow-injection analysis, high-performance liquid chromatography or capillary electrophoresis) with special attention to contributions from 2000 to date.