WASHINGTON — President Obama anticipated Republican resistance to his jobs program, but he is now meeting increasing pushback from his own party. Many Congressional Democrats, smarting from the fallout over the 2009 stimulus bill, say there is little chance they will be able to support the bill as a single entity, citing an array of elements they cannot abide.

“I think the American people are very skeptical of big pieces of legislation,” Senator Bob Casey, a Democrat from Pennsylvania, said in an interview Wednesday, joining a growing chorus of Democrats who prefer an à la carte version of the bill despite White House resistance to that approach. “For that reason alone I think we should break it up.”

Senator Harry Reid of Nevada, the majority leader, has said he will put the bill on the legislative calendar but has declined to say when. He almost certainly will push the bill — which Mr. Obama urged Congress to pass “right now!” — until after his chamber’s recess at the end of the month; Mr. Reid has set votes on disaster aid, extensions for the Federal Aviation Administration and a short-term spending plan ahead of the jobs bill.

Republicans have focused their attack on the tax increases that would help pay for the spending components of the bill. But Democrats, as is their wont, are divided over their objections, which stem from Mr. Obama’s sinking popularity in polls, parochial concerns and the party’s chronic inability to unite around a legislative initiative, even in the face of Republican opposition.