New Hampshire State House, Rockingham 4
O'Shaughnessy failed to advance past the November 2, 2010, general election.
O'Shaughnessy advanced past the September 14 primary election. He faced incumbent Carolyn Webber (D), incumbent David Bettencourt (R), incumbent Mary Griffin (R), incumbent Charles McMahon (R), incumbent Marilinda Garcia (R), incumbent David Bates (R), incumbent Walter Kolodziej (R), incumbent Ronald Belanger (R), incumbent Robert Elliott (R), Daphne Kenyon (D), Ann Kern (D), Matthew Groch (D), Jane Lang (D), Jocelyn Leary (D), Christine White-Rogers (D), Lori Demaine (D), Neil Fallon (D), Ellie Rouillard (D), Thomas Witham (D), Henri Azibert (D), Kevin Waterhouse (R), John Sytek (R), Richard Okerman (R), Gary Azarian (R), and Donna Mauro (R) in the November 2 general election.
- Biography from Project Vote Smart
- List of 2010 primary election candidates for New Hampshire House of Representatives
- Project Vote Smart list of candidates for New Hampshire House of Representatives in the November 2, 2010 election
- 2010 Primary election results, New Hampshire
- List of Republican primary winners
- List of Democratic primary winners (dead link)