New Hampshire's 15th State Senate district is one of 24 districts in the New Hampshire Senate. It has been represented by Democrat Tara Reardon since 2024, when fellow Democrat Rebecca Whitley retired.
District 15 is based in the state capital of Concord, also covering the Merrimack County towns of Bow and Hopkinton
The district is located entirely within New Hampshire's 2nd congressional district.
Results are of elections held under 2022 district lines.
The following result occurred prior to 2022 redistricting, and thus were held under different district lines.