“Run Elizabeth Run” is the slogan grabbing the headlines and hearts of liberal Democrats.

Warren’s speech opposing the monstrous “CRomnibus” is portrayed as the speech that could launch her presidential campaign. That Elizabeth Warren has become the progressive hero and alternative to Hillary Clinton is beyond doubt.

Warren says she “is not” running for president, which literally is correct. But Warren always uses the present tense, leaving the future open.

The progressive chorus calling on Warren to run is growing louder by the day. This scenario mimics Warren’s supposedly reluctant entry into the 2012 Massachusetts Senate race.

Assuming Warren runs, will she sell outside the progressive bubble?

During the 2012 Senate race, Warren’s first electoral foray, my website Legal Insurrection researched Warren more thoroughly than almost any other publication.

Among other areas, we exhaustively tracked the Cherokee fiasco initially uncovered by The Boston Herald, working with Cherokee genealogists to unravel and unmask Warren’s multitude of excuses and dodges, including her so-called family lore.

Through it all, I marveled at Warren’s political skills — especially her ability to turn herself into a victim when challenged.

Legitimate questioning about how she used her supposed Native American heritage to advance her law professor career was portrayed by Warren as an attack on her parents and family.

That victimization narrative as a political tactic would become Warren’s best political talent.

There is no one on the political scene today who plays upon and preys upon a sense of victimization and envy as well as Warren.

Warren’s accusation of the “system” being “rigged” against the average person is repeated with a staccato and cadence worthy of Dustin Hoffman’s character in the movie “Rain Man.”

Progressives eat it up. And so does the liberal media.

In that sense, Warren is a unique political talent who has broad appeal within the Democratic Party.

There is no doubt that Warren could run a competitive presidential primary against Hillary Clinton. I’ll go a step farther. Warren would crush Hillary.

Hillary is the stale and contrived corporatist insider using connections and cashing in favors to clear the deck. Warren is the fresh outsider, who feels your pain. Warren is more Bill Clinton than Hillary is.

But can Warren sell outside of the progressive bubble and Democratic cocoon?

There is little reason to think that on a national scale Warren would be anything other than a George McGovern, certainly if the 2014 midterm elections are any indication.

There were several easy layup races for liberal Democrats where Warren made appearances, such as for Al Franken in Minnesota, and Jeff Merkley in Oregon.

But Warren also campaigned in several high-profile hotly contested races, and there is nothing to suggest she helped those candidates.

In Kentucky, Warren’s appearances for Alison Lundergan Grimes were much ballyhooed, but accomplished little. To the contrary, Mitch McConnell made Warren into a campaign issue. Lundergan was trounced on election day.

You can’t blame Warren for all that, but Warren’s progressive persona didn’t help one bit.

In other contested races, Warren fared no better. In Iowa (Bruce Braley), Colorado (Mark Udall) and Wisconsin (Mary Burke) Warren’s campaign appearances made no difference. In each of those races, Warren’s intervention played into a narrative of Democratic candidates out of touch with the real world.

Only in New Hampshire did Warren’s campaigning for Jeanne Shaheen — and attacks on Scott Brown — arguably help. But given that southern New Hampshire basically now is a liberal Boston suburb, Warren’s help in New Hampshire may be the exception that proves the rule that Warren has limited reach.

Warren also is out of touch with the nation as a whole, which continues to self-identify as conservative much more than liberal.

Even millennials, particularly white millennials, are trending Republican.

There is nothing to suggest from the 2014 campaign and public trends that Warren can sell nationally beyond the progressive bubble and the Democratic Party.

But Warren could win the Democratic primary. If she wants to.

William A. Jacobson is a professor at Cornell Law School, and publisher of Legal Insurrection Blog.