A Republican state lawmaker is publicly urging Gov. Tom Corbett to support a Medicaid expansion, a sign that Corbett's facing a split in his own party.

House Human Services Committee Chairman Gene DiGirolamo said rejecting an offer of increased federal funding to expand Medicaid eligibility threatens hospital finances and ensures many low-income Pennsylvanians will miss out on primary health care.

Republican governors of three other heavily populated states -- Florida, Michigan and Ohio -- say they're going along with the expansion.

Corbett said he won't take part unless Pennsylvania gets more ability to shape Medicaid's insurance plans. Corbett's insurance commissioner, Michael Consedine, said the Corbett administration isn't willing to build on a system that they think is broken.