Sen. Bernie SandersBernie SandersButtigieg says Iowa ‘shocked the nation’ in caucus night speechCampaigns fume about being left in the dark after Iowa results delayedSanders predicts he’ll do ‘very, very well’ as Iowa continues to wait for resultsMORE (I-Vt.) slammed the process surrounding Iowa caucuses while releasing his campaign’s own internal data Tuesday amid growing anger frustration over the delay of the Monday night’s results. 

This was not a good night for democracy,” Sanders told reporters on a plane to New Hampshire. 

Campaigns, volunteers and voters have grown furious at the delay in the results, which the Iowa Democratic Party has blamed on reporting issues and an issue with the phone app that was meant to transmit the final tallies.

Sanders campaign senior adviser Jeff Weaver said on MSNBC Tuesday that the campaign’s internal tallies show Sanders leading in the final count with 29.66% of the state’s delegates. The data was based on 60 percent of the precincts reporting, he said. The campaign had released similar data based on 40 percent of precincts several hours earlier. 

A number of other campaigns have also released their internal data from the caucuses, but the majority of the official results from the Iowa Democratic Party will not be available until 4 pm CT, according to the party’s chairman. 

The Sanders campaign’s data showed former South Bend, Ind. Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegButtigieg says Iowa ‘shocked the nation’ in caucus night speechEntrance polls: Iowa caucusgoers prioritize electability, health careTrump wins Iowa GOP caucusesMORE (D) in second place at 24.87 percent, followed by Sen. Elizabeth WarrenElizabeth Ann WarrenButtigieg says Iowa ‘shocked the nation’ in caucus night speechCampaigns fume about being left in the dark after Iowa results delayedSanders predicts he’ll do ‘very, very well’ as Iowa continues to wait for resultsMORE (D-Mass.) at  20.65 percent. 

Former Vice President Biden placed fourth at 12.92 percent, while Sen. Amy KlobucharAmy Jean KlobucharSanders predicts he’ll do ‘very, very well’ as Iowa continues to wait for resultsKlobuchar amid delay in Iowa results: ‘We are punching above our weight’Frustration, questions as delays hamper Iowa caucusesMORE (D-Minn.) rounded out the top six at 11.18 percent, according to the campaign’s data. 

The fallout over the delay in results in Iowa has raised questions over the legitimacy and viability of the caucuses.