The possibility of US Rep. Stephen Lynch (D-South Boston) facing off against US Rep. Bill Keating (D-Quincy) was raised during an interview today of the two State House lawmakers in charge of redrawing the Bay State's political boundaries.

"On the Record" hosts Ed Harding and Janet Wu pressed state Sen. Stanley Rosenberg (D-Amherst) and state Rep. Michael Moran (D-Brighton) on how they plan to redraw the map to reflect Massachusetts losing a Congressman due to the Census.

WU: Rumblings at the State House at this point say a likely scenario is Congressman Stephen Lynch and William Keating will be duking it out next year if no other incumbent retires. You’ve been looking at the numbers. Do the numbers work out that way? Is it possible that that would happen?

MORAN: I think the people who are talking that way are probably getting that from -- we have five Congressmen that sit in very powerful positions. We have a woman in Niki Tsongas; we have the Eighth Congressional District, which is the majority minority district. So if you take all those, and you consider those are the ones we have to keep, you’re left with Congressman Lynch, Congressman Keating and Congressman Tierney. And just by geography, Congressman Lynch and Congressman Keating seem to be the two that have to run against – if you use that as the principles. So that I think is where that is coming from.

WU: And is that a principle that’s sort of guiding you at this point?

MORAN: It’s one of many.

Sen. Rosenberg was asked whether he plans to run for U.S. Rep. John Olver's seat. “There’s 200 members of the Legislature," he said. "I suspect the overwhelming majority are keeping open their option to run for Congress someday.”

Pressed by Wu, Rosenberg said, “I never close the door on anything.”

Rosenberg said in redrawing the maps, he plans to be "totally fair." "We’re going by the numbers, we’re going by the rules, and these maps will be constitutionally defensible and meet the best interests of the Commonwealth," he said.

Lynch, who represents half of Dorchester, argued last month before the redistricting committee that his Ninth Congressional District should stay largely intact, in part because of the large Irish population.

Asked by reporters afterwards about the possibility of Quincy getting drawn into his district, Lynch acknowledged that many Irish Americans have migrated south from Boston. “I’ve heard varying proposals out there and I don’t know how that’s going to work out," Lynch said. "I really don’t. There are some natural – that whole area going from Boston down to the South Shore has been a natural migration pattern, if you will. Most of my family is already down there.”

Video segments of the WCVB interview of Rosenberg and Moran, which will air on television Sunday morning, are available here.