• Donald Trump is wooing past mega-donors for his 2024 presidential campaign.
  • Some key donors, however, have been harder to pin down, The Wall Street Journal reported.
  • It could be a problem as the Biden campaign rakes in cash.

Donald Trump may have likely clinched the Republican Party's nomination, but he has yet to secure some of its largest mega-donors.

While Trump works to woo top donors, some have indicated they are concerned about his legal problems and are choosing to focus their resources on congressional races instead.

It's a worrying sign for Trump's campaign, especially as President Joe Biden rakes in his own campaign cash.

One wealthy holdout is Miriam Adelson, who— with her now-deceased husband — contributed $90 million to Trump's 2020 campaign, the largest sum he received, The Wall Street Journal reported.

Adelson and Trump have dined together twice in recent months and talk regularly, the Journal reported. While those close to her told the Journal she's likely to contribute eventually, how much and when are key concerns. As the campaign season heats up, Trump needs every dollar.

March campaign financials show Biden and the Democrats raised over $90 million compared to $65 million for Trump and the Republicans, according to The Journal. With some $192 million at the start of April, Biden went into the month with nearly $100 million more than Trump. The former president also has mounting legal bills with which to contend.

Trump may still make up the ground. Many of his other loyal donors are contributing to both his legal funds and his campaign. For instance, Robert Bigelow, the hotelier, gave $1 million toward Trump's legal bills and $20 million to his campaign, The Journal reported.

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