In the parliamentary system of government, the chief minister is treated as the "first among equals" in the cabinet; the position of deputy chief minister is used to bring political stability and strength within a coalition government.
No other state and union territory has more than one deputy chief minister in office.
Of the 25 incumbents, two are woman — Pravati Parida in Odisha & Diya Kumari in Rajasthan.
The longest-serving incumbent deputy chief minister is Chowna Mein, who has served as the deputy chief minister of Arunachal Pradesh since 17 July 2016 (for 8 years, 211 days).
As of 13 February 2025, three states (Assam, Sikkim and Uttarakhand) and one union territory (Puducherry) have never had a deputy chief minister.