Centrist Democrats appear reluctant to join their party’s embrace of a public option for ObamaCare.

The idea of adding a government-run insurance option to compete with private insurers is making a comeback in the Democratic Party, with President Obama endorsing the idea Monday, two days after presumptive Democratic presidential nominee Hillary Clinton emphasized a public option as part of an effort to win over Bernie Sanders and his supporters after a contentious primary.

But among more centrist members of the Senate, where the “public option” was stopped in 2009, there is little enthusiasm for the idea.

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