Washington (CNN) Donald Trump is yet again on top of the latest national poll of Republican voters, taking his biggest lead in weeks with 32% of support.

And while Trump has spent recent days feuding with Jeb Bush over former President George W. Bush's legacy on keeping America safe, the former Florida governor is stuck in the single digits with 7%, according to the latest ABC News/Washington Post poll released Wednesday. That puts Bush in fourth place, behind Ben Carson at 22% and Sen. Marco Rubio at 10%.

"He's way down in the polls, he's doing very poorly," Trump said of Bush on Wednesday morning on ABC's "Good Morning America." "He's embarrassed by what's happening so he has to attack me to try to get his numbers up."

It's still unclear how that strategy will pan out as the poll was in part conducted before the two once again began butting heads Friday when Trump said former President George W. Bush did not keep America safe as the 9/11 attacks happened during his tenure in office. Bush hit back, calling Trump "pathetic" and penned an op-ed published Tuesday slamming Trump for his "dangerous views on national security."

Bush and Trump have previously flung attacks back and forth, but Bush's decision to begin hitting back at Trump's relentless attacks failed to deliver any bump in the polls for the former Florida governor who was viewed early on as the establishment favorite to win the nomination.

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