More than half of likely Republican voters would like someone other than Donald Trump to be their party's presidential nominee. That's according to a new Fox News poll released Wednesday, which asked who those voters would prefer the win the GOP nomination. Just 48 percent said they would prefer Trump to "someone else," while 51 percent said they would prefer someone else." And just 74 percent of the Republicans polled said they would vote for Trump if the election were held right now.

That lack of support from Republican voters might partially explain Trump's two-month dip in Fox's poll against likely Democratic nominee Hillary Clinton. In the new survey, conducted from Sunday to Tuesday, Clinton had 44 percent support to Trump's 38 percent. He's down 7 points from 45 percent in Fox's May poll, which actually had Trump beating Clinton by 3 points.

While Clinton has remained relatively steady since May at 42 percent, Trump does not appear to have recovered from his decline in an early June Fox poll down to 39 percent support. Clinton, meanwhile, gets the support of 83 percent of Democrats. Trump does edge out Clinton among independent voters, 39 percent to 31 percent.

The numbers aren't much better for Trump when Libertarian party candidate Gary Johnson is thrown into the mix. A former governor of New Mexico, Johnson earns 10 percent in a three-way race, with Clinton at 41 percent and Trump at 36 percent.

A Quinnipiac poll released earlier on Wednesday showed a much tighter national race between Clinton and Trump (42 percent to 40 percent, respectively), while another set of polls shows Clinton besting Trump in 7 important swing states.