The 2024 campaign will now turn on whether Trump can blunt Harris’ soaring start

Donald Trump’s campaign, which has whiffed in its early attacks on Kamala Harris’ new presidential campaign, will grapple this week for a more effective foothold after the vice president transformed an election of stunning surprises.

The ex-president has deployed some of his most trusted political tools — targeting racial identity, creating alternative realities, flinging insults and gaslighting. On Sunday, for instance, he spread a new false conspiracy theory over the size of Harris’ rally crowd in Michigan last week. But his efforts to bring down his new adversary and her policy of ignoring his...