Make no mistake, Democratic Sen. Elizabeth Warren's call for impeachment is nothing but a product of poor polling. Since her presidential announcement in early February, she has seen many in the field pass her by and with Joe Biden holding steady at the top spot, she will take any and all measures to catch a tailwind.

And so it is that Warren took to the Senate floor Tuesday and declared, "The information that has been given to us in the Mueller report clearly constitutes adequate information to begin an impeachment proceeding in the House of Representatives. No matter how many times Mitch McConnell or the rest of the Republicans want to wish that away, it's there in black and white in the report."

Of course, nothing is there in black and white other than the fact that, "The investigation did not establish that members of the Trump campaign conspired or coordinated with the Russian government in its election interference activities."

But that is not enough for Warren, who managed to keep a straight face on the Senate floor. "This is not a fight I wanted to take on but this is the fight in front of us now," she said. "This is not about politics, this is about the Constitution of the United States of America. We took an oath not to try to protect Donald Trump. We took an oath to protect and serve the Constitution of the United States of America."

Back on March 25, back when Biden hadn't entered the race but was still trouncing her by 24 points in the Real Clear Politics average, she told Stephen Colbert that voters she'd talked to didn't care about the Mueller report, "Because what people are talking about, what they're asking about, are the things that touch their lives every day."

Now, many weeks later, as the Biden campaign surges ahead, Warren finds herself behind him by more than 30 points in the Real Clear average. Polls in New Hampshire and Massachusetts show her running fourth and third, respectively.

That is bad news. And that is why Warren is throwing around soak-the-rich tax schemes, slavery reparations, college debt forgiveness and now impeachment.

It never ends. Unless the polling trends continue, in which case Warren will be relegated to the role with which the voters of Massachusetts entrusted her. That could be a good thing. Her constituents have needs and should not be pushed aside while their senator chases her pipe dreams.