Expect fireworks when the candidates take the stage for their first debate since the San Bernardino, Calif., terror attack and Donald Trump’s proposed ban on Muslims entering the United States.

Most of his rivals criticized the proposal immediately, but polls conducted since then showed that it did not dent Trump’s front-runner status.

As the holiday lull overtakes the campaign, this event will be the final opportunity for a few weeks to make good impressions — and headlines.

Once the new year begins, there will be a scramble for supremacy before Iowans go to their caucuses.

Who will break out of the pack to challenge Trump? This debate could answer that question: Ben Carson is fading, Sen. Ted Cruz is emerging, Sen. Marco Rubio is faring well, Gov. Chris Christie is strong in New Hampshire and Jeb Bush is holding on for dear life.