Jill Colvin | Associated Press

Former President Donald Trump is calling for unity and resilience after an attempt on his life added fresh uncertainty to a tumultuous presidential campaign.

The ads, part of American Bridge 21st Century's broader $200 million effort to defeat Trump, target exurban and rural areas like Erie, Johnstown and Altoona.

At a moment of growing legal peril, Donald Trump on Saturday ramped up his calls for his GOP rivals to drop out of the 2024 presidential race. At a rally in Erie, he also threatened to primary Republican members of Congress who fail to focus on investigating Democratic President Joe Biden and urged them to halt Ukrainian military aid unless the White House cooperates with investigations into Biden and his family.

The two leading contenders for the Republican presidential nomination courted conservative women at the Moms for Liberty conference in Philadelphia on Friday.

During a Wednesday visit to East Palestine, Ohio, former President Donald Trump described the federal response to the toxic train derailment there as a “betrayal”

Special counsel Jack Smith has subpoenaed officials in Wisconsin, Michigan, Arizona and Pennsylvania, asking for communications with or involving former President Donald Trump, his campaign aides and a list of allies involved in his efforts to try to overturn the results of the 2020 election.

Control of Congress hangs in the balance as Democrats have shown surprising strength, defeating Republicans in a series of competitive races and defying expectations that high inflation and President Joe Biden’s low approval ratings would drag the party down.

Republicans hoping to emerge from crowded primaries this year have spent tens of thousands of dollars hiring operatives with ties to former President Donald Trump. They're betting those connections will give them a leg up on landing critical endorsements that will help them win. But as Trump has gotten off the fence and weighed in on some of the year’s most competitive primaries, that strategy has proven a bust.

Former President Donald Trump’s late endorsements in hypercompetitive Republican Senate primaries in Pennsylvania and Ohio have unlocked a flood of support for his chosen candidates. But some Republicans believe Trump has betrayed his core supporters by backing TV’s Dr. Mehmet Oz in Pennsylvania and author JD Vance in Ohio.

Former President Donald Trump is endorsing Mehmet Oz in Pennsylvania’s crowded Senate primary, ending months of jockeying for Trump's support. Trump says in a statement that his decision is “all about winning elections” as he backs the celebrity heart surgeon best known as the host of daytime TV’s “The Dr. Oz Show.”