Tagg Romney, the son of Republican presidential candidate Mitt Romney, is reportedly considering a run for the open U.S. Senate seat in Massachusetts.

The Boston Herald reported Monday that Romney, a member of his father’s unsuccessful 2008 and 2012 campaigns, might enter the special election for Democratic Sen. John Kerry’s open seat, but did not identify any sources.

Republicans are looking for a candidate in the Democrat-leaning state since party member and former Sen. Scott Brown said last week that he will not run. The seat is open because Kerry has been appointed secretary of state.

Gov. Deval Patrick, a Democrat, has named former Chief of Staff William 'Mo' Cowan to fill the seat until voters decide in a June 25 special election who will serve out the remainder of Kerry’s term.

Mitt Romney was Massachusetts governor from 2003 to 2007, and Tagg Romney has a venture capital firm, Solamere, in Boston.

The Herald also reported Saturday that Mitt Romney’s wife, Ann, was being urged to run.

The potential Democratic candidates include Reps. Edward J. Markey and Stephen F. Lynch, and Middlesex District Attorney Gerard T. Leone.