Donald Trump’s support among Republicans has collapsed in the wake of President Obama’s release of his long form birth certificate, according to a new survey by the Public Policy Polling.

PPP, which in April gave Trump sole possession of first place among Republican voters, now has him back in the pack with the support of just just eight percent, tied with Ron Paul.

According to the new poll, which was performed May 5-8, Mike Huckabee now leads among potential GOP candidates with 19 percent, narrowly ahead of Mitt Romney, who has 18 percent. Newt Gingrich is at 13 percent, Sarah Palin at 12 percent, Michele Bachmann has seven percent, and Tim Pawlenty five percent.

Trump, who had emphasized the issue of Obama’s birthplace, has seen a key support base erode as more Republicans come to believe Obama was born in Hawaii. While the number of GOP voters who think Obama was not born in the United States remains at 34 percent, the the tally is down from the 51 percent recorded in a February PPP poll. But Trump’s support has declined even among Birthers, the poll shows.

“Donald Trump had a meteoric rise to the top of the GOP Presidential field and has fallen back down just as quickly,” said Dean Debnam, President of Public Policy Polling. “Republicans voters burned out on him pretty fast, especially after the birther issue lost some of its potency with the release of President Obama’s birth certificate.”