In fact she's dipped enough in the latest polls that the presumed favourite in the 2016 U.S. presidential race is now underwater, with more people expressing an unfavourable view than a favourable one.
A similar downward trend was expressed Tuesday in two new polls, released just weeks after she launched her campaign and even before her first big rally scheduled for June 13 in New York City.
One registered her lowest favourable rating in a decade.
The CNN survey put it at 46 per cent — down sharply since controversies erupted over her secretive email server and conflicts-of-interest claims involving her family foundation and far lower than her peak of 69 per cent recorded in 2011.
There's good news for Clinton: She still leads all Republican rivals. Barely.
That survey had her beating Sen. Rand Paul by a mere percentage point, with a three-point lead over Sen. Marco Rubio and Wisconsin Gov. Scott Walker.
The bad news for her is the lead has shrunk considerably. Her standing among self-described independents has suffered, with only 37 per cent describing her as honest and trustworthy.
The Republican party revelled in the surveys on Tuesday by posting a roundup of all the media reaction on its website, with headlines like: "Clinton Faces Questions of Trustworthiness," and "Clinton Unfavourable Numbers Highest in 14 Years."
Still, with 17 months to go before the election, the former secretary of state, senator and first lady remains in the enviable position of having a monumental lead in her own party's nomination race.
While a crowded Republican ring will spend the coming months in a political battle royal, Clinton's closest threat on the Democratic side is, according to the CNN survey, 50 percentage points back.
That long shot is Vermont Sen. Bernie Sanders in second place, followed by the other declared candidate on the Democratic side, Maryland Gov. Martin O'Malley.
"If either one of them were to win, it would be the greatest upset in the history of politics," said Dan Pfeiffer, a former Obama White House aide now a CNN political analyst.
To avoid a repeat of her 2008 primary loss, Clinton has tacked left on a series of issues: more lenient prison sentences, campaign-finance reform, immigration, same-sex marriage. She's kept silent on other issues where she's been to the right of her party grassroots — such as free trade and the Keystone pipeline.
But she's not nearly as left-leaning as Sanders.
The 73-year-old, self-described socialist supports Canadian-style health care. He's among the minority in Congress fighting a surveillance bill that would replace expired provisions of the 2001 Patriot Act. And, unlike Clinton, he voted consistently against tough prison sentences and the Iraq war before it became politically fashionable.
And he's developing an enthusiastic online following.
Flattering posts about Sanders have been getting up to 70,000 mentions on Facebook and Twitter, with headlines like: "Bernie Sanders has big ideas, and they deserve our attention."
That's more than triple what positive items about the far-more-famous Clinton have generated over the same period, according to the monitoring site Spike.
Sanders has also been speaking to overflow rooms and has raised enough money to add to his paid organizers in Iowa — he currently has two, compared with Clinton's estimated 30 in that state.
He says that speaks to a thirst for change.
"The turnouts we had in Iowa reflect the building momentum of our mass movement to create a political revolution aimed at restoring democracy," Sanders posted on his Facebook page.Suggest a correction