If you have nothing else going for you - if you have counseled campaigns to use buzzwords instead of ideas with details and nuance, bloviated Great Ideas of marginal sense and relevance, flip-flopped on great issues such as climate change and not-lobbied-but-counseled with the very corporation you chastise - at least be known for character.
The President of the United States must be known for personal integrity. You've said so yourself, in many more than those spare words.
So what about your character?
Hendrik Hertzberg writing in The New Yorker described Newt Gingrich thusly:
"[I]magine, if you will, a man who, as Speaker of the House, orchestrates the impeachment of a President for an adulterous affair with a White House aide twenty-six years his junior while he himself is conducting an adulterous affair with a congressional aide twenty-two years his junior ... Imagine a man who becomes the only House Speaker ever to be disciplined for ethics violations."
Such a man seeks the Republican nomination for President as a family values conservative in a family values caucus state! That, we don't have to imagine.
Newton Leroy Gingrich was charged with eighty-six - 86! - ethics violations, sanctioned by the House with a $300,000 penalty (the vote was 395 to 28), ultimately stood down as Speaker and - one day after his constituents in Georgia's 6th district re-elected him to an 11th term - announced he would resign from the House of Representatives. And called his colleagues in the House "cannibals." Is it any wonder than several of Newt Gingrich's House followers back then so soundly and publicly disavow him now?
Sure, you can change your politics. Change your spouse. Change your religion. Change your mind. People could understand these changes, even if they are frequent.
But how, Mr. Gingrich, does someone change his character? His integrity?