NEW YORK — President Donald Trump’s return to the campaign trail was designed to show strength and enthusiasm heading into the critical final months before an election that will decide whether he remains in the White House.

Instead, his weekend rally in Oklahoma highlighted growing vulnerabilities and crystallized a divisive reelection message that largely ignores broad swaths of voters — independents, suburban women and people of color — who could play a crucial role in choosing Trump or Democratic challenger Joe Biden.

The lower-than-expected turnout at the comeback rally, in particular, left Trump fuming.

“There’s really only one strategy left for him, and that is to propel that rage and anger and try to split the society and see if he can have a tribal leadership win here,” former Trump adviser-turned-critic Anthony Scaramucci said on CNN’s “Reliable Sources.”

The president did not offer even a token reference to national unity in remarks that spanned more than an hour and 40 minutes at his self-described campaign relaunch as the nation grappled with surging coronavirus infections, the worst unemployment since the Great Depression and sweeping civil unrest.

Nor did Trump mention George Floyd, the African American man whose death at the hands of Minnesota police late last month sparked a national uprising over police brutality. But he did add new fuel to the nation’s culture wars, defending Confederate statues while making racist references to the coronavirus, which originated in China and which he called “kung flu.” He also said Democratic Rep. Ilhan Omar, who came to the U.S. as a refugee, “would like to make the government of our country just like the country from where she came, Somalia.”

Trump won the presidency in 2016 with a similar red-meat message aimed largely at energizing conservatives and white working-class men. But less than four months before early voting begins in some states, there are signs that independents and educated voters — particularly suburban women — have turned against him. Republican strategists increasingly believe that only a dramatic turnaround in the economy can revive his reelection aspirations.

“It’s bad,” said Republican operative Rick Tyler, a frequent Trump critic. “There’s literally nothing to run on. The only thing he can say is that Biden is worse.”

But the day after Trump’s Tulsa rally, the president’s message was almost an afterthought as aides tried to explain away a smaller-than-expected crowd that left the president outraged.

The campaign had been betting big on Tulsa.

Trump’s political team spent days proclaiming that more than 1 million people had requested tickets. They also ignored health warnings from the White House coronavirus task force and Oklahoma officials, eager to host an event that would help him move past the civil rights protests and the coronavirus itself.