If Trump picks Flynn, it would be the first cross party (Democratic-Republican) ticket since 1860. I would get behind that.
Actually it will be the first time in history a Republican ticket will have two lifelong Democrats.
He isn't really a lifelong Democrat, unless you're implying he's a "RINO" or a plant. He's switched back and forth multiple times, supporting GOP candidates in the '80s and '90s, supporting Democrats in the '00s, and returning to the GOP after 2012.
He's an independent overall.
He's a plant, all right. All that remains to be known is whether he's a Kremlin plant or a Clinton plant.