***
That's easy. He had MUCH more money than all the rest combined. He flooded the airwaves, both radio and TV while the others could not. The good news is, he was forced to spend it when he certainly didn't want to.
***
Also, don't forget that with so few Democrats engaged in primaries, MANY Democrats crossed over to vote in the Republican Senate primary. You gotta know they supported Cornyn!!
No doubt in my mind Bob.