Take a look at that last figure

Reuters poll:

If the Republican presidential primaries came down to these two candidates, for whom would you vote?

Donald Trump 41.6%
Ted Cruz 32.5%
Wouldn't vote 25.9%

Nearly a quarter of Republicans would refuse to choose between Trump and Cruz.

The Democrats certainly aren't going to vote for either of them. And neither has much appeal for the independents. And over a quarter of Republicans consider the choice between Trump and Cruz unacceptable.

'Nuff said. Good luck getting to 270 electoral votes with that.