An Iowa poll released Tuesday by Public Policy polling has Donald Trump and Hillary Clinton remaining in the lead in their respective parties and Jeb Bush as the Republican candidate viewed most unfavorable by Republican voters.

This poll shows a sharp decline for Bush in the Hawkeye state, just a month ago in August PPP had him polling at 11 percent, now he is at 6, his real issue though is with favorablity.

That number makes him the most unfavorable Republican candidate according to the poll.

Trump remains the leader of the GOP race in Iowa with 24 percent, Ben Carson follows with 17, and Carly Fiorina is in third with 13 percent. Marco Rubio and Ted Cruz are tied with eight percent.

The poll has some interesting revelations when it comes to the most recent Republican debate. A majority of GOP voters, 59 percent, believe Trump’s comments about Carly Fiorina’s appearance were inappropriate, and 49 percent think likewise when it comes to Trump’s comments about Columba Bush.

Though, “for all the controversy over the last six weeks Donald Trump’s in a slightly stronger position now than he was after the first debate,” said Dean Debnam, President of Public Policy Polling.

Recently there has been much talk about Republican candidates and their stance on Islam, and this poll helps show what Iowan Republicans believe about the religion. Only 49 percent think Islam should even be legal in the United States, and 69 percent believe that the president has waged a war on Christianity.