select.form-control {
    margin-bottom: 100px;
}

<div class="form-group required">
    <label for="InputState" class="col-sm-3 control-label">Provinsis <sup>*</sup> </label>
    <div class="col-sm-9">
        <div class="">
            <select class="form-control" required id="InputState" name="InputState">
                <option value="">Choose</option>
                <option value="1">Alabama</option>
                <option value="2">Alaska</option>
                <option value="3">Arizona</option>
                <option value="4">Arkansas</option>
                <option value="50">Wyoming</option>
            </select>
        </div>
    </div>
</div>