LAS VEGAS — Reacting to tech troubles in Iowa, Nevada Democrats scrapped plans to use similar technology at their caucuses in less than three weeks, as early voting states sought to re-assure the public that they could pull off smooth elections.

Officials in South Carolina and New Hampshire expressed confidence in their primary election systems, while Democrats in Nevada, the third state to vote, said they were taking steps to prevent the chaos seen in Iowa.

Nevada Democratic Party chair William McCurdy II issued a statement Tuesday saying the party “can confidently say that what happened in the Iowa caucus last night will not happen in Nevada.”

“We will not be employing the same app or vendor used in the Iowa caucus,” McCurdy said. “We had already developed a series of backups and redundant reporting systems, and are currently evaluating the best path forward.”

Molly Forgey, a spokeswoman for the party, said the party will not use the original app developed by the original vendor, Shadow. The party is evaluating its options and does not rule out using another app to tabulate results. Forgey did not immediately have details on the other options.

Democrats in Nevada had planned to use more technology than Iowa in their Feb. 22 caucuses. They had announced plans to use two apps: one to tabulate results and a second preloaded onto tablets for voters to use at caucus sites to cast online votes during four days of early voting.

The Nevada Democratic Party paid Shadow Inc. $58,000 for technology services in August, according to the party’s spending reports filed with the Federal Election Commission. The party’s state-based fundraising reports shows additional payments totaling about $50,000 in October and December.

Shadow Inc. issued a statement Tuesday saying it regrets the delay in reporting in Iowa but the underlying data it collected was “sound and accurate.”

Former Nevada Sen. Harry Reid, who is credited with building Nevada’s Democratic Party and securing its place as the third state weighing in on the presidential race, issued a public statement saying he is “100% confident that what happened in Iowa will not happen in Nevada.”