But Audrey Gibson-Cicchino, RNC coordinator for the US Secret Service, said during a Sunday afternoon news conference in Milwaukee that there would be no changes to the security plan.

Some 50,000 people are expected to attend the four-day jamboree of pageantry, politics and policy as the party makes its case to voters ahead of November’s general election.

What is the Republican National Convention?

Once every four years each of the two main US parties hosts a convention to formally select their respective White House standard-bearer and prepare for the final stretch of campaigning.

The conferences include high-profile speakers, as well as a prime-time speech from the presidential candidate.

During the convention, the delegates from each state pledge their support to the candidate of their choice and approve a platform.

It is merely a formality for Trump as the party’s presumptive nominee because he won 2,265 delegates in the primaries, which is enough for the nomination.

The Democrats will hold their convention next month in Chicago.

Trump is not expected to speak until Thursday night.

One of the biggest moments of the conference will be when he unveils his vice-presidential candidate.

But as the dust settles from the assassination attempt, it is unclear when Trump will announce who he has chosen as his running mate, or when he or she will speak.

Donald Trump Jr, the former president’s son, is expected to speak on Wednesday.

South Carolina Governor Nikki Haley, one of Trump’s fiercest rivals during the Republican primary, was originally expected to skip the RNC.

But after the assassination attempt, it was reported that she will now not only attend but speak at the conference.

Other speakers reportedly include Marjorie Taylor Greene, a Georgia congresswoman, Arizona Senate contender Kari Lake, Florida Governor Ron DeSantis, Dana White, head of the Ultimate Fighting Championship (UFC), former Fox News host Tucker Carlson and Teamsters union general president Sean O’Brien.

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