Romney son Tagg mulling US Senate run: report

His father may have lost the presidential election, but Tagg Romney is now considering a US Senate bid, a Boston newspaper reported Monday.

Republican Mitt Romney's oldest son, who runs a private equity firm, has made no formal announcement that he is running in the special June election to fill the seat vacated by newly-confirmed Secretary of State John Kerry.

The Boston Herald said it "has learned" that the younger Romney was mulling a run but did not identify sources for the story.

The 42-year-old Romney, a regular fixture on his father's 2012 failed campaign to oust President Barack Obama, would be one of the last serious hopes for his party to mount a reasonable run this year in Massachusetts, where Mitt Romney was a popular governor.

Republicans in the liberal state are scrambling to find a viable challenger for the seat, after former senator Scott Brown, who lost his high-profile re-election bid in November to consumer protection advocate Elizabeth Warren, announced he would not run despite polls showing strong support.

William Weld, another popular Republican governor in Massachusetts, has also reportedly opted out of the race, leaving Democrats the strong favorites.

The Herald reported at the weekend that Republican heavyweights were pushing for either Tagg or his mother Ann Romney, who had a star turn on the Republican convention stage during her husband's campaign, to run for the seat. But a family friend and advisor was quoted as saying that Ann Romney, who has never run for public office, was unlikely to take the plunge.

Democrats are rallying around congressman Ed Markey, although he could face a primary challenge from fellow congressman Stephen Lynch.