Update 11:22 a.m. Tuesday: The bill wound up getting six Senate Republicans to clear a key procedural hurdle with 60 votes.

With inclement weather gripping most of the nation, Senate leaders were forced to postpone a vote Monday evening on a bipartisan plan to once again provide federal unemployment insurance for more than 1 million Americans. The proposal appears to be falling short of the Republican support needed to clear procedural hurdles and advance in the Senate.

The proposal by Sens. Jack Reed (D-R.I.) and Dean Heller (R-Nev.) would provide benefits to eligible workers for three months, at a cost of $6.5 billion. With more than a dozen senators still absent Monday evening due to delayed flights, Majority Leader Harry M. Reid (D-Nev.) agreed with Republicans to postpone a procedural vote on the proposal and said it would occur instead on Tuesday.