Manchester, N.H. (CNN) Sen. Elizabeth Warren in her first visit to New Hampshire in more than two years made the case for radical reform in Washington, telling voters here that the time for "change at the margins" has passed.

Returning to the trail a week after making her debut as a likely presidential candidate in Iowa, Warren again hammered a government, led now by President Donald Trump, that she described as fatally compromised by wealthy influence peddlers.

"This is about who the rules work for," Warren said. "We need to make change in this country. Not little, itty-bitty change. Not change at the margins. Not a nibble around the edges. Not even pass one good law here and one good law there. We need to make systemic change in this country."

New Hampshire could be an electoral linchpin for Warren, who will arrive here next year with outsize expectations -- the two most recent Democratic presidential nominees from Massachusetts won the next-door primary -- and likely at least one other likely high-powered 2020 rival in Vermont Sen. Bernie Sanders, who also represents a bordering state. Sanders defeated Clinton in New Hampshire by more than 20 percentage points three years ago.

Nancy Johnson, who voted for Sanders then but drove down 20 miles down from Northwood to see Warren on Saturday, said the 2020 contest would, for her, be a two-horse race -- with Warren currently a few lengths ahead.

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