Oklahoma is one of the redder states, almost 1 million people voted for him in 2016 and it is close to plenty of other red states. Have a Biden rally in California and see how many will apply
Trump nutswingers really love their rallies plus over 3 months since their last one so they are desperate to see master. But no matter how many show up, they still can only vote once
If the election was based on rally sizes Sanders would be the democratic nominee. Biden didn't go to most of the states he won in the primary
People don't need any motivation to vote for Biden, Trump is doing enough of that himself