In a highly anticipated event, former President Donald J. Trump and his new running mate, Senator JD Vance of Ohio, held their first campaign rally in Grand Rapids, Michigan on Saturday. This marks Mr. Trump's first rally since the incident that ended in an attempted assassination.

The rally aims to build upon the momentum generated by their official nomination at the Republican National Convention in Milwaukee earlier this week. As their campaign gains steam, some Democrats have been calling for President Joe Biden to withdraw from the race.

While Mr. Biden recovers from Covid-19 at his residence in Rehoboth Beach, Delaware, he has reportedly become increasingly resentful of the calls from his own party members to end his re-election campaign. It is viewed by the president as part of an orchestrated effort led by former President Barack Obama and Representative Nancy Pelosi.

In fact, Representative Pelosi, who privately expressed doubt about Mr. Biden's chances of winning re-election, recently shared with colleagues that she would prefer a "competitive" open primary to replace him, rather than anointing Vice President Kamala Harris as the new Democratic presidential nominee.

With more Democratic lawmakers publicly urging Mr. Biden to step aside, Republicans are grappling with the potential repercussions for down-ballot candidates who have tied their campaigns to the president. These races are crucial in determining control of Congress.

The Republican National Convention saw a viewership of over 25 million people as Mr. Trump delivered a speech that began with calls for national unity but quickly descended into the divisive and incendiary rhetoric for which he is known. He continued to assert false claims of a stolen 2020 election.

On the other side of the aisle, Vice President Kamala Harris attempted to reassure anxious Democratic Party donors, informing around 300 of them that concerns about Mr. Biden's campaign were unwarranted. However, some donors found the meeting condescending and felt that their legitimate concerns had been ignored.

In a surprising turn of events, Senator Sherrod Brown of Ohio, who would be significantly impacted if President Biden were to lose decisively, became the fourth senator to call for the president's withdrawal. He aligned himself with Ohio voters who believe Mr. Biden should end his campaign. Senator Martin Heinrich of New Mexico and nine House Democrats also joined the calls that day.

Democratic Party officials are pressing for an early nomination of Mr. Biden through a virtual roll-call vote before the party's convention next month. The rules committee will vote on conducting this vote in a meeting next week.

As pressure mounts, Representative Mark Takano of California expressed his support for Vice President Harris to take on Donald J. Trump, stating that President Biden's greatest accomplishment was saving democracy in 2020 and that he can do so again by passing the torch.

Michael Tyler, the communications director for the Biden-Harris campaign, confirmed that President Biden is eager to return to the campaign trail as soon as his doctors give the green light.

Moreover, President Biden mourned the passing of Representative Sheila Jackson Lee, praising her unwavering leadership in delivering racial justice and advocating for progressive causes.

The Biden campaign faced criticism from Debbie Stabenow, Michigan's senior Democratic senator, who labeled the new Republican ticket as anti-labor and a threat to reproductive rights protections in the state. Stabenow expressed concern over Donald Trump's boast of overturning Roe v. Wade and JD Vance's strong support for a national abortion ban without exceptions for rape and incest.

Meanwhile, Senator Elizabeth Warren of Massachusetts voiced her support for Vice President Harris, stating that she is ready to step up and unite the party if President Biden were to step back.

In other news, major Democratic donor Reid Hoffman has parted ways with his political adviser, Dmitri Mehlhorn, citing differing views on the future of the Democratic Party. Both men have been influential in encouraging Democrats to support President Biden as their nominee.

As the campaign season unfolds, it becomes increasingly clear that the race for the presidency is heating up, with Trump and Vance seeking to capitalize on their nomination while calls for President Biden to drop out grow louder.