RENO — In his bid to take Nevada, Mitt Romney made inroads among several voting groups that had been solidly behind President Barack Obama. The Republican challenger claimed majority support among independents and even attracted a few black and Hispanic voters over to his ticket — but it didn’t matter. Romney lost Nevada in large part because of a double-digit gender gap that saw a majority of women voters break Democratic. Exit poll results show the president took a comfortable lead among women in Nevada, highlighting a problem that some GOP strategists have been urging their party to address.“Democrats were …