>every single election, someone runs on the platform of abolishing democracy

So was this person Romney in 2012? McCain in 2008? Kerry in 2004? Gore in 2000?

Any one of those presidents would've abolished democracy?

Somehow we picked the right candidate every time?

The average constitution lasts about 18 years. The US constitution has lasted almost 250. Statistically, that's quite unlikely if a candidate ran on a platform of abolishing democracy in every election.