.chckbox {
  display: inline-block;
  float: left;
}
#firstlist {
  float: left;
  width: 30%;
}
#secondlist {
  float: right;
  width: 30%;
  margin-right: 50px;
}

<div id=firstlist>
    <p class="form-field  GRG_Member pd-radio required  ">
      <label class="field-label">Member</label>
      <br>
      <input type="radio"   value="27665" onchange="" />
      <label class="inline" >1 </label>
      <br>
      <input type="radio"  value="27667" onchange="" />
      <label class="inline" >2</label>
      <input type="radio"  value="27669" onchange="" />
      <label class="inline" >3</label>
      <input type="radio"   value="27671" onchange="" />
      <label class="inline" >4</label>
    </p>
  </div>
  <div style="display:none"></div>
  <div id="secondlist">
    <p class="form-field  GRG_Professional pd-checkbox required    ">
      <label class="field-label">Professional?</label>
      <br>
      <input class="chckbox" type="checkbox" value="27679" onchange="" />
      <label class="inline">Yes</label>
      <br>
      <input class="chckbox" type="checkbox" value="27681" onchange="" />
      <label class="inline">No</label>
      <br>
      <input class="chckbox" type="checkbox" value="27683" onchange="" />
      <label class="inline">Maybe</label>
      <br>
      <input class="chckbox" type="checkbox" value="27685" onchange="" />
      <label class="inline">Don't Know</label>
      <br>
    </p>
  </div>