Four more Democrats, including two incoming senators from Republican-leaning states, have pronounced themselves open to new gun laws.

In a statement, North Dakota Sen.-elect Heidi Heitkamp said that "possible changes to our gun laws" would be part of the conversation after the elementary school shooting in Newtown, Conn. "As always, I will listen closely to North Dakotans and seek their input on any possible changes to current law," she said.