After some quick analysis using the S&P 500 and Real GDP from 1948 forward, here are the results.
Dem Pres 15.78% 3.96% (31 years)
GOP Pres 10.08% 2.62% (36 years)
But don't just stop there, the results get interesting when you look to see what party is in control of the House or Senate
One party Dem 15.30% 4.43% (18 years)
One party GOP 12.70% 2.60% (7 years)
Dem Pres GOP House 16.53% 3.4% (10 years)
Dem Pres GOP Senate 16.69% 3.42% (9 years)
Dem Pres GOP House and Senate 16.95% 4.20% (6 years)
GOP Pres Dem House 10.21% 2.68% (28 years)
GOP Pres Dem Senate 5.39% 3.84% (17 years)
GOP Pres Dem House and Senate 6.47% 2.39% (16 years)
I'm not certain any conclusions can be derived from this data but interesting nonetheless. Of course this paints broad brushes, since Nixon and his price/wage controls goes into the GOP category and Kennedy and his tax cutting goes into the Dem category.
Dem Pres 15.78% 3.96% (31 years)
GOP Pres 10.08% 2.62% (36 years)
But don't just stop there, the results get interesting when you look to see what party is in control of the House or Senate
One party Dem 15.30% 4.43% (18 years)
One party GOP 12.70% 2.60% (7 years)
Dem Pres GOP House 16.53% 3.4% (10 years)
Dem Pres GOP Senate 16.69% 3.42% (9 years)
Dem Pres GOP House and Senate 16.95% 4.20% (6 years)
GOP Pres Dem House 10.21% 2.68% (28 years)
GOP Pres Dem Senate 5.39% 3.84% (17 years)
GOP Pres Dem House and Senate 6.47% 2.39% (16 years)
I'm not certain any conclusions can be derived from this data but interesting nonetheless. Of course this paints broad brushes, since Nixon and his price/wage controls goes into the GOP category and Kennedy and his tax cutting goes into the Dem category.