A bipartisan proposal to expand background checks to more gun buyers seems in jeopardy as more Republican senators are expressing opposition to the proposal, perhaps even enough to derail it. But there is plenty of time for both sides to change lawmakers' minds.

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As of Monday evening, senators were saying the vote appears likely late this week, rather than midweek as top Democrats hoped. A delay would give both sides more time to line up support.

Out of 16 GOP senators who voted last week to start debating gun control legislation, eight say they will oppose a background check compromise between a Democratic and a GOP senator. Two others say they are leaning against it.

Gun control advocates will need support from some of those GOP senators to prevail.


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