But when those officials are actually given time to work: Republican presidents with a gridlocked government have averaged just a 1 percent annual return.
If you want to cherry-pick good statistics to make the claim work, reverse it and say Democrat presidents with a gridlock government make the market go up. Sure, that average was 11 percent before this term started, but it certainly hasn't helped now.
Going further down the rabbit hole to find statistics, you can say the best combination for government is one with a Democratic president, a Democratic Senate, and a Republican House. But since World War II, that combination happened only once, starting in 2011. It's not enough of a trend to say anything legitimate about what's true, real and predictable in the future.
As the 2016 election moves forward, you'll hear this concept again and again: That a gridlocked government is good for stocks. But just remember, it may not be true.