Here is the response he posted on his Facebook page:
I wake up at 5AM every morning. Since I co-manage the Investors Business Daily editorial page, I spend most of my time reading and prepping for the morning editorial meetings which go from 8-10AM and watching what is being absorbed by the American consciousness through the news at every half hour.
I usually come up with ten -fifteen ideas - the hardest part is narrowing the choices down. From time to time I will send the cartoon sketches around to a few of my colleagues to see which ones they like... and then I just pick the one I like.
Since we are a financial newspaper, I have an early deadline, 3:20PM (at the LA Times, my deadline was 9PM). So, I usually draw from around noon to 2PM and then colorize until it is finished.
My latest cartoon, Hillary Delete... The cartoon evolution from sketch to finish.