blah.js

      require([
        "esri/map", "esri/dijit/Search", "esri/layers/FeatureLayer", "esri/InfoTemplate", "dojo/domReady!"
      ], function (Map, Search, FeatureLayer, InfoTemplate) {
         var map = new Map("map", {
            basemap: "gray",
            center: [-72.5842345,44.260972], // lon, lat
            zoom: 6,
         });

         var s = new Search({
            enableLabel: false,
            enableInfoWindow: true,
            showInfoWindowOnSelect: false,
            map: map,
            enableSuggestions: true,
         }, "search");

         var sources = s.get("sources");

         //Push the sources used to search, by default the ArcGIS Online World geocoder is included. In addition there is a feature layer of US congressional districts. The districts search is set up to find the "DISTRICTID". Also, a feature layer of senator information is set up to find based on the senator name. 

         sources.push({
            featureLayer: new FeatureLayer("http://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/CongressionalDistricts/FeatureServer/0"),
            searchFields: ["DISTRICTID"],
            displayField: "DISTRICTID",
            exactMatch: false,
            outFields: ["DISTRICTID", "NAME", "PARTY"],
            name: "Congressional Districts",
            placeholder: "3708",
            maxResults: 6,
            maxSuggestions: 6,

            //Create an InfoTemplate and include three fields
            infoTemplate: new InfoTemplate("Congressional District", "District ID: ${DISTRICTID}</br>Name: ${NAME}</br>Party Affiliation: ${PARTY}"),
            enableSuggestions: true,
            minCharacters: 0
         });

         sources.push({
            featureLayer: new FeatureLayer("http://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/US_Senators/FeatureServer/0"),
            searchFields: ["Name"],
            displayField: "Name",
            exactMatch: false,
            name: "Senator",
            outFields: ["*"],
            placeholder: "Senator name",
            maxResults: 6,
            maxSuggestions: 6,

            //Create an InfoTemplate

            infoTemplate: new InfoTemplate("Senator information", "Name: ${Name}</br>State: ${State}</br>Party Affiliation: ${Party}</br>Phone No: ${Phone_Number}<br><a href=${Web_Page} target=_blank ;'>Website</a>"),
            
            enableSuggestions: true,
            minCharacters: 0
         });

         //Set the sources above to the search widget
         s.set("sources", sources);

         s.startup();

      });