WATCH: These Republican senators say they won’t vote for ‘skinny’ health bill unless there’s broader debate

Three Republican senators say they will not vote for a new health care plan being crafted by GOP leaders — unless they get a guarantee from Speaker Paul Ryan that it will not pass the House as-is.

Watch the senators’ news conference in the player above.

Sens. John McCain of Arizona, Lindsey Graham of South Carolina and Ron Johnson of Wisconsin say they can’t support the so-called “skinny repeal” taking shape in the Senate because it would wreak havoc on health insurance markets.

They say they will vote in favor of it only as a vehicle to open House-Senate negotiations on a more comprehensive bill.

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But in light of rumors that the House could pass the bill as-is, they are looking for a guarantee from Ryan that that won’t happen.

Their opposition is enough to sink the “skinny bill.”