FARMVILLE, Va. -- As vice presidential nominees Mike Pence and Tim Kaine take the stage on Tuesday evening for their only head-to-head matchup, they're looking to bolster the reputations of their bosses. But just is important is their desire to introduce themselves to a public that largely doesn't know who they are.

To be fair, it's pretty easy to be overshadowed by the over-sized personalities that are Donald Trump and Hillary Clinton, and the numbers prove it.

A CBS News poll released this morning showed that 67 percent of voters are undecided about whether they do or do not like Kaine, a Democratic senator from Virginia. Ditto for 57 percent of voters with Republican Indiana Gov. Mike Pence.

That largely mirrors results from an Atlanta Journal-Constitution poll conducted back in August.

CBS' data does include one major bright spot for Pence and Kaine, who are unlikely to attract the record-breaking audience that tuned in last week to view the fireworks between their bosses: they have net positive favorability races, unlike the historically unpopular Trump and Clinton.

Kaine and Pence will both work to use their nice guy and religious credentials to try and convince voters that their bosses deserve their support. The real question is just how much the men are eclipsed by the two giant figures who aren't even on the stage.

Related coverage: 

Behind the scenes at Longwood University’s VP debate

Here’s what to expect from Tim Kaine during tonight’s VP debate

Here’s what to watch for in tonight’s vice presidential debate

Five weeks out, projection models give edge to Clinton in race for White House

AJC poll: Georgia voters are ‘meh’ on Mike Pence, Tim Kaine

In American politics, being VP is no sure path to better things