During a livestream this week, political analyst Mark Halperin said that internal polling has many Democrats feeling nervous about Vice President Kamala Harris' electoral chances.

In what may serve as confirmation of that claim, former President Barack Obama recently hit the campaign trail on Harris behalf. 

Former president lectures men in Pennsylvania

That's according to the Daily Beast, which noted how Obama has helped the vice president's war chest raise some $80 million in recent months.

What's more, the former president is also said to have cultivated "relationships with online creators" while "filming dozens of digital ads."

Another example of Obama's involvement came on Thursday when he lectured male voters at a rally held in Pittsburgh, Pennsylvania.

"I'm sorry, gentlemen. I’ve noticed this especially with some men who seem to think Trump's behavior, the bullying, and the putting people down is a sign of strength. I am here to tell you that is not what real strength is," Reuters quoted him as saying.

Obama suggests that sexism is holding Harris back

"Real strength is about helping people who need it and standing up for those who can't always stand up for themselves. That is what we should want for our daughters and for our sons," the former president continued.

"Kamala is as prepared for the job as any nominee for president has ever been," he insisted. "With Kamala you've got actual plans. Trump - concepts of a plan."

Reuters noted that Obama's remarks came not long after he had delivered a similar message while stopping at a local campaign office.

"Part of it makes me think -- and I'm speaking to men directly -- part of it makes me think that, well, you just aren't feeling the idea of having a woman as president and you're coming up with other alternatives and other reasons for that," Obama declared.

Stops planned for other swing states

Meanwhile, Reuters reported last week that the former president is planning to make additional stops in other critical swing states.

"President Obama believes the stakes of this election could not be more consequential and that is why he is doing everything he can to help elect Vice President Harris, Governor Walz and Democrats across the country," Obama senior advisor Eric Schultz was quoted as saying.

"His goals are to win the White House, keep the U.S. Senate, and take back the House of Representatives," Schultz went on to stress.

"Now that voting has begun, our focus is on persuading and mobilizing voters, especially in states with key races. Many of these races are likely to go down to the wire and nothing should be taken for granted," he added.