Billionaire Elon Musk also appeared with Trump on stage, calling the November election "the most important of our lifetime."

Donald Trump is rallying supporters at the same Pennsylvania grounds where a gunman tried to assassinate him in July setting aside what are now near-constant worries for his physical safety.

Republican presidential candidate Donald Trump on Saturday will return to the rural Pennsylvania site where he was nearly assassinated for a rally in the critical battleground state exactly one month before the Nov.