NARAL Pro-Choice America, which endorsed Rep. Bart Stupak's (D-Mich.) primary challenger Wednesday, is considering backing other primary challengers around the country.

NARAL joined Planned Parenthood in backing former Charlevoix County Commissioner Connie Saltonstall in her weeks-old primary challenge to Stupak, an anti-abortion rights Democrat who inflamed party activists by holding out for abortion language in the recently passed healthcare bill.

But the group isn't done yet. Asked whether other Democrats who joined with Stupak or opposed the bill should be concerned, NARAL political director Elizabeth Shipp said, "Definitely."

I asked if NARAL was eyeing anyone specifically.

"Yes, but none that I'm ready to talk about yet," Shipp said.

One logical choice would be Rep. John Barrow (D-Ga.), a Democrat with a mixed abortion rights record who represents a heavily African-American district. Barrow easily dispatched state Sen. Regina Thomas last cycle, thanks to some help from President Obama, but recently the black community has bristled at his healthcare vote.

Thomas is running again, but now attention has shifted to Lester Jackson, another African-American state senator.

The district is 44 percent black, meaning a concerted effort against Barrow could pay dividends in the primary.