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JACKSON, Miss. — The Mississippi Senate has voted twice against expanding Medicaid to people who work low-wage jobs without insurance. Both votes fell along party lines Tuesday.

Democrats in the minority voted in favor of expansion. Republicans in the majority voted against it.

Republican-led Mississippi is one 12 states that have not taken the option to expand eligibility for Medicaid under the Affordable Care Act, the health care overhaul law signed by then-President Barack Obama in 2010.

Health care advocates say Mississippi has lost billions of dollars by not extending Medicaid eligibility to about 300,000 people working low-wage jobs without health insurance.