WASHINGTON (AP) — Their isolation complete, House Republicans on Thursday caved to demands by President Barack Obama, congressional Democrats and fellow Republicans for a short-term renewal of payroll tax cuts for all workers.

After days of wrangling that even House Speaker John Boehner acknowledged "may not have been politically the smartest thing in the world," the Ohio Republican abruptly changed course and dropped demands for immediate holiday season talks with the Senate. The breakthrough probably spares workers a hit in their paychecks that would have kicked in Jan. 1.

Boehner said he expects both House and Senate to pass a new bill by Sunday that would renew the tax break while congressional negotiators work out a longer-term measure that would also extend jobless benefits for millions of Americans and prevent doctors from absorbing a big cut in Medicare payments.