In the final speech of the night, RNC co-chair Lara Trump largely focused on the assassination attempt on her father-in-law.

"It may not be a surprise that I actually had a very different speech that I was prepared to give up here tonight," she began. "That all changed at 6:11 on Saturday evening. Nothing prepares you for a moment like that."

Lara Trump recounted how she grabbed the remote to shut off the television so her children wouldn't see the images of their grandfather.

She said the incident was a "jarring reminder that we, as Americans, must always remember there is more that unites us than divides us."

She thanked the former president for his "resilience," calling him a "lion," while calling on voters to cast their ballot for him.

"In that split second on Saturday, Donald Trump reminded us all of that very history and who we are at our core as a nation. That is the Donald Trump that I know," she said.

The entire Trump family will be in attendance at the RNC on Thursday night, sources tell ABC News.

Melania Trump, Ivanka Trump and her husband Jared Kushner will all join the former president as he gives his acceptance speech.

It will be the first time in this presidential cycle the Trump family will be together.

Sources say Melania and Ivanka will not be speaking but attending to show their support.

-ABC News' John Santucci

As Lara Trump spoke about Donald Trump pumping his fist after being shot at his Pennsylvania rally over the weekend, the RNC crowd reacted by raising their own fists in the air.

"Fight, fight, fight," they shouted.

ABC News contacted several of Nikki Haley's supporters to ask their reactions to her speech at the RNC Tuesday night.

Jack LaFrankie, a voter in Tennessee, told ABC News that he agreed with much of Haley's speech and that if the election were held today, he would reluctantly vote for Trump.

Eli Raykinstein, an incoming sophomore at Michigan State University, said her speech resonated with him.

"I also like how she spoke to the people who weren't totally sold on Trump, not just to the base he already has," Raykinstein said.

Thalia Flores from New Hampshire said she would never vote for Trump.

"Never. She just bought herself a cabinet position -- probably Secretary of State," she said.

After Haley's speech, Louis Hibbs, an undecided voter from Boothwyn, Pennsylvania, told ABC News that he's still undecided.

"I still can't help looking back at the debate and the way Biden was stumbling over his own words," he said.

Undecided North Carolina voter Roger Stewart told ABC News that Haley is a true Republican.

"I'm still undecided. That's my official and honest declaration. I loved her speech, though," Stewart said.

-ABC News' Hannah Demissie, Kelsey Walsh and Isabella Murray