public class Poll
    {
        public int idBM { get; set; }
        public string QuestionBM { get; set; }
        public string AnswBM { get; set; }
        public string ImageBM { get; set; }
        public List<PollVotesLst> PollVotesLstBM { get; set; }
    }


    public class PollVotesLst
    {
        public string VariantBM { get; set; }
        public int Votes { get; set; }      
    }

@foreach (var item in Model.PollVotesLstBM)
{
    
    @Html.RadioButtonFor(m => m.PollVotesLstBM, "") @item.VariantBM <br/>    
    
}

<input type="submit" value="Сохранить"/>

</div>