Obama is a mediocre president with a mediocre track record. He would have lost in '12 if the GOP hadn't tripped all over itself throughout the primary season tearing down Mittens in the process. In fact, Obama had about as rotten a year before winning reelection as George Bush Jr, who also only won because the opposition candidate was a terrible choice that no one really liked.
If, when defending your support for Donald Trump, and your response is,
"But but but... HILLARY!!!", then you lost the argument before you even began.
Early voting in Georgia. On the 20th of October this old Goldwater conservative voted against both Donald Trump and Hillary Clinton by casting my vote for Gary Johnson. Neither Trump or Clinton belong within a million miles of the Oval Office.