To Win Iowa, Trump Turns to Allies Like Marjorie Taylor Greene

Less than a week before Iowans decide whether to slingshot Donald J. Trump toward another presidential nomination, his schedule looks like this: Go to Washington for an appeals court hearing on Tuesday. Pop into Iowa for a Fox News town-hall event on Wednesday — and then make an expected return to court on Thursday, this time in New York.

He is not scheduled to hold another rally in Iowa until Saturday, two days before the caucuses.

As Mr. Trump flits between the presidential trail and the courtroom, his campaign has deployed a web of high-profile conservative allies to help fill the gaps and make his case across the state, a strategy that the former president may be more likely to turn to this year as his legal issues keep him occupied.

Over the last months, Mr. Trump’s campaign has set up smaller rallies with Republican luminaries who, among the president’s right-wing base, have achieved a kind of political celebrity.

To start its efforts in January, the campaign last week held events with Gov. Kristi Noem of South Dakota, Representative Marjorie Taylor Greene of Georgia and Eric Trump, one of Mr. Trump’s sons. This week, Ben Carson, Mr. Trump’s former secretary of housing and urban development, is scheduled for two appearances in eastern Iowa.

Before a winter storm hit Iowa and disrupted travel, the campaign had also planned to hold events on Monday and Tuesday with Roseanne Barr, the actress and outspoken Trump supporter; Gov. Sarah Huckabee Sanders of Arkansas, Mr. Trump’s former press secretary; and Mike Huckabee, the former Arkansas governor who won the Iowa caucuses in 2008.

Mr. Trump’s use of campaign surrogates is a notable example of an old campaign tactic. Political candidates have long leaned on prominent allies