The Senate has advanced a $26 billion bill that would aid states facing a budget crunch and avert the layoffs of tens of thousands of teachers and other public employees. On Wednesday, Republican Senators Olympia Snowe and Susan Collins of Maine sided with Democrats to break a long-running deadlock. A final vote is expected today. House Speaker Nancy Pelosi says she’ll summon lawmakers back from summer recess to approve the House version of the measure next week.