“Republicans hoping to halt Donald J. Trump’s march to their party’s presidential nomination emerged from the weekend’s voting contests newly emboldened by Mr. Trump’s uneven electoral performance and by some nascent signs that he may be peaking with voters,” The New York Times reports.

The report adds: “Outside groups are moving to deploy more than $10 million in new attack ads across Florida and millions more in Illinois, casting Mr. Trump as a liberal, a huckster and a draft dodger.”

Much of the “Stop Trump” campaign is focused on television advertising, and especially on the big states voting on March 15. “Four different groups have reserved at least $10 million in airtime in Florida so far, according to trackers of media spending. That number is expected to grow, but television stations in Florida are already awash in such ads,” The Times notes.