Thank you all for your help! :-)
I went for a walk in frustration and to run some errands. When I got back I turned the key and turned on the radio to see if it was the ignition switch. Yep - all good there. I tried it again and she almost starts - get the chug-chug of a near start. We've looked at the carb a few times but I suspect the clogged needle might be right. We do smell gas in the carb. Funny how she runs for months & months and one day she just says, "NO!". I'm going to take off the coil and clean the connections to make sure that connection is clean and the coil is only a few months old. I bet it's something small or minor. Thanks again!