Suppose you want to leave town. You're deciding whether to hop on the Blue Bus or the Red Bus.
You go to the driver of the Blue Bus and ask where it will take you. Says the driver: "Well, we'll pull out and head south on Chandler Road. That'll take us to U.S. 20 west, which should be OK at this time of day, but if the traffic's bad we can take a detour onto Simms Street. Five miles down we'll get onto the interstate, only we'll have to be careful to stay in the left lane, because there's a lot of construction going on down around Snowville.
"Now, one of our passengers would like to swing by Wal-Mart, so we'll get off for a while at exit 12. And there's a lady who really wants a Borscht Burger, so we'll make a ten-mile detour to the Burger Czar out by Hamptonfield. Then there's a rest stop after exit 21, where we can . . ."
So you go to the driver of the Red Bus and ask the same question. This driver says: "We're going to Vegas. Eighty miles per hour the whole way, no stops. It'll be great. Hop on."
Meanwhile, somewhere in the background, the driver of the Blue Bus is still droning on about the New Jersey Turnpike.
Now, maybe Vegas isn't your top destination choice. You might be skeptical that you can do the whole trip at eighty with no stops. You might even think that the Red Bus driver is kind of full of it.
But here's the thing. When you came to the bus station, you needed to make a choice. You now know that the Red Bus driver has a destination in mind. He has expressed clearly where he is going and why he wants to go there. That's a positive reason to hop on the Red Bus. By contrast, the Blue Bus driver has not given you any reason to choose the Blue Bus--unless you happen to like Borscht Burgers.
The application to recent politics is left as an exercise for the reader.