"I don't know how likely Sanders is in being able to get the nomination," she said, "but I have hoped from the beginning of this campaign that he could affect Hillary [Clinton] or any other front-runner in a more progressive manner."

Despite Sanders' rising popularity, polling shows Clinton is still the leading Democratic candidate in Iowa.

"There's just enough things going on with Hillary right now that I don't know that she's real trustworthy," said Bruce Hoffmeier, a retired Newton school administrator.

Hoffmeier said concerns about the private email server Clinton used while she was secretary of state could provide an opportunity for another candidate not already in the race.

"I think it will be interesting if [Vice President] Joe Biden enters the race," he said, "because I think he will jump right into the fray and maybe take over in the top spot if he jumps in."

For now, polling shows Trump narrowly owns the top spot for Republican voters in Iowa. But Bell Clark has advice if he wants to stay there: "Maybe stop being a little more self-centered."

The Iowa caucuses, the first step in the presidential nominating process, are set for February 1.

Vocabulary

anti-establishment：反正统的；反对现有权力结构的

dissipate：驱散

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