Donald Trump’s single-minded focus on his multiple felony convictions, which have become a centerpiece of his bid to return to the White House, is causing no small amount of alarm among some Republicans who think it’s not the winning issue he seems to believe it is. According to a report from Politico, polling has shown that, while Trump has solidified his base, independents and swing voters have edged away from him now that he is a convicted felon and, that by reminding them of his legal problems, he is making it harder and harder to bring them into the fold in what is expected to be a neck-a…