For the first time in the 2016 cycle, a new poll of likely Iowa caucusgoers shows Bernie Sanders within single digits of Democratic frontrunner Hillary Clinton in the Hawkeye State — a stunning result that, if corroborated by other surveys, would upend the conventional wisdom about Clinton’s inevitability.

The Bloomberg Politics/Des Moines Register survey, conducted from August 23-26, shows a steep decline in Clinton’s support among Iowa Democrats. While a May Bloomberg/DMR poll found the former Secretary of State led Sanders 57 percent to 16 percent, with Vice President Joe Biden at 8 percent. Now, Clinton leads Sanders by just seven points, 37 percent to 30 percent, with Biden in third place at 14 percent. No other candidate registers more than 3 percent support.

While Sanders has moved ahead in New Hampshire, most polls have shown a large Clinton lead in Iowa – until now