Create and Run Polls in Google Slides using Google Forms & Google Sheets

function createTrigger() {
  var form = FormApp.openById('FORM-ID'); // Enter your Google Forms ID here
  ScriptApp.newTrigger('updateSlidesChart')
      .forForm(form)
      .onFormSubmit()
      .create();
}

function updateSlidesChart(){
  var slidesId = "SLIDE-ID"; // Enter your Google Slides ID here

  SlidesApp.openById(slidesId).getSlides()
  .forEach(function(slide) {
    slide.getSheetsCharts().forEach(function(chart) {
      chart.refresh();
    });
  });
}