"The Wall Street Journal is calling on the Republican Party to give up on Donald Trump if the presidential nominee doesn't "change his act by Labor Day."
In an editorial published Sunday evening, the Journal said that if Trump's backers can't get him to turn things around, the GOP "will have no choice but to write off the nominee as hopeless and focus on salvaging the Senate and House and other down-ballot races."
Trump himself needs to "stop blaming everyone else and decide if he wants to behave like someone who wants to be president -- or turn the nomination over to [running mate] Mike Pence," the article argued.
The paper's biting criticism comes as Trump has escalated his war on the news media, accusing it of putting "false meaning" into his words and "protecting" his Democratic opponent Hillary Clinton.
In particular, he blasted a New York Times article that painted a dire picture of his campaign.
Related: Donald Trump says media is out to get him
But the Journal editorial singles out Trump as the problem, saying reports about difficulties in his campaign "are appearing now because the polls show that Mr. Trump is on the path to losing a winnable race."
Without addressing the Journal article specifically, Trump tweeted Sunday night that he has remained true to himself."
Trump has been true to himself since the beginning:
It is only his die-hard supporters who've been willfully blind to what Trump truly is and who are willing to place this country in the hands of a maniac because of their crazed hatred of Hillary Clinton. They hate Clinton more than they love America.