Shelby predicts the resolution likely could fund the Defense Department and other agencies until mid-November, John Bennett reports.
Some analysts also believe the post-midterm session could produce an omnibus defense spending bill for the entire fiscal year 2015, according to the report.
Stan Collender, a federal budget analyst, wrote in a column for Forbes.com that lawmakers would pass a second CR after at least December.
Collender also projects the first CR to take effect between Oct. 1 and mid-December while the second resolution could pass in December.