Tennessee Senator and now-former Donald Trump Vice Presidential finalist Bob Corker made a bit of news on Wednesday when he withdrew his name from consideration and said that Trump's best choice for a running mate just might be his daughter, Ivanka.

Was Corker half-kidding? You'd have to ask Corker, but even he did add that choosing Ivanka "wouldn't pass muster." Corker is right that Trump really can't pick Ivanka as a running mate for vice president. But for all intents and purposes, she has been acting as a virtual partner on the campaign trail and it would benefit Trump immensely to increase her role and visibility even more. And it's not just because Ivanka is well-spoken and physically attractive. To understand why she is so crucial to the Trump campaign, it's important to first understand the role family members have always played in presidential campaigns.

The biggest reason the voters are usually subjected to endless pictures, videos, and stories about the candidates' wives and children is because they almost always help to humanize the candidate. Politicians are like movie stars, despite all their protestations to the contrary they really aren't "just like us." They operate under a different set of goals, a different set priorities, and as we found out this week as the Hillary Clinton email scandal investigation wrapped up, they pretty much have a different set of rules.

In Trump's case, he even sounds and looks different. He says things that politicians and non-politicians alike wouldn't say in public. And his "tan" and hair … well, you know. Trump presents the manifold challenge of having to relate to the public despite being a billionaire who looks and sounds very different from them. The first person campaign spin doctors would usually turn to in order to make a person like Trump more relatable to regular folks would be the candidate's wife. But Melania Trump might as well be another space alien in that department. As a stunning former fashion model she does add a nice Jackie Kennedy-like degree of chic and class, but that's something else entirely. A lot of male voters might wish they had a wife like Melania, and a lot of women voters may wish they looked and dressed like Melania, but she doesn't humanize Trump very much. Just like the politically incorrect things Trump says may relate to the way a lot of voters think, it's not the same as relating to the way they work, live and act. Trump needs to go elsewhere for that.

So that brings us back to Ivanka. As a regular on "The Apprentice" and a visible businesswoman/celebrity with her own clothing line, the American people were relatively familiar with her well before the Trump campaign launched. She, too, is fashion-model gorgeous, but she's also closer in age to millennials (which is now the single largest generational group in America), and she's a married mother too. Speaking of marriage, she happens to be married to an Orthodox Jewish man and she converted to Judaism before marrying him. Ivanka's adopted religion and full immersion into the observant Jewish lifestyle has been a strong counter argument to those who continue to accuse the Trump campaign of anti-Semitism.

And Ivanka isn't just being used for visual purposes, or so we're being led to believe. More and more stories are being "leaked" about the growing advisory role she's playing in the campaign, the most prominent of which being the story that she played a big hand in ousting former Trump Campaign Manager Corey Lewandowski last month.

But wait, there's more! In many ways, it's a lot better to have a daughter humanizing and making the candidate more palatable to the voters as compared to a spouse. Whenever a wife or a husband is trotted out as someone who really influences a candidate, that can be a bit of a double-edged sword. Sure we like to have our candidates interacting and showing decent behavior with their spouse, but then worries about being hen-pecked or dominated in the relationship arise. Those were the kinds of criticisms Bill Clinton suffered from during his presidency from those who thought Hillary had too much influence in the White House, a concern that's come full circle now that Bill has made some damaging missteps like his recent ill-advised private meeting with Attorney General Loretta Lynch in Phoenix.

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