Pennsylvania and the Center for Medicare and Medicaid Services have reportedly reached a deal on the state's Medicaid proposal, meaning the state will expand insurance to 281,000 poor residents. As Sarah Kliff at Vox noted, this would make Pennsylvania the 27th state to expand Medicaid, and Gov. Tom Corbett the ninth Republican governor to move to expand health insurance in a way his conservative principles can stomach. 

Update, 3:59 p.m.: In a press release, Corbett's office announced that the new plan will benefit 600,000 Pennsylvanians (according to the Kaiser Family Foundation, there are 281,000 residents whose incomes were too low to qualify for Obamacare subsidies but also didn't qualify for pre-expansion Medicaid). Corbett has accepted the expansion plan approved by the Obama administration, though Greg Sargent at The Washington Post reports that he didn't get exactly what he wanted. One Democratic source told Sargent that there won't be a "lockout" provision, for example, meaning people who miss a payment won't be kicked out of the program. 

Original Post: According to Georgetown University's Joan Alker, who first reported the agreement, CMS will announce the details of the plan this afternoon:

Corbett, a Republican governor who's currently down 25 points in his re-election campaign, first introduced his plan in January. Like Arkansas, the plan takes federal money and uses it to buy private insurance for Medicaid recipients. Unlike Arkansas, Pennsylvania's plan, at the time, also required recipients at a certain income level to pay small premiums and co-pays.