The final countdown has begun for the landmark decision on President Obama’s healthcare law.

The justices will render judgment on the controversial law on Thursday, ending months of speculation about a ruling that could have far-reaching implications for the 2012 election and beyond.

The ruling will come shortly after 10 a.m. Thursday, at the end of an action-packed week for lawmakers on Capitol Hill.

Anticipation grew over the weekend that the Supreme Court would issue the healthcare decision on Monday morning. Instead, the court ruled in the high-profile Arizona immigration case, while announcing that the remaining decisions for the term — including the health case, Florida v. Department of Health and Human Services — would not be issued until Thursday.