WASHINGTON  — President Barack Obama’s economic recovery plan has passed the Senate and is on its way to difficult House-Senate negotiations.

Just three Republicans helped pass the plan on a 61-37 vote and they’re already signaling they’ll play hardball to preserve more than $108 billion in spending cuts made last week in Senate dealmaking. Obama wants to restore cuts in funds for school construction jobs and help for cash-starved states.

Those cuts are among the major differences between the $819 billion House version of Obama’s plan and a Senate bill costing $838 billion. Obama has warned of a deepening economic crisis if Congress fails to act. He wants a bill completed by the weekend.