Donald Trump. Thomson Reuters President-elect Donald Trump on Tuesday dismissed critics who say Hillary Clinton will likely win the popular vote despite losing the 2016 election.

In a series of tweets Tuesday morning, Trump said that if the US did not adhere to its Electoral College system, which proportionally divvies up votes to states based on population, the real-estate mogul would've adopted a different campaign strategy altogether.

"If the election were based on total popular vote I would have campaigned in N.Y. Florida and California and won even bigger and more easily," Trump wrote.

He continued:

Trump's comments come as many on the left have taken solace in Clinton's likely million-vote win in the popular vote despite losing the Electoral College to Trump. Key states with many electoral votes such as Wisconsin, Pennsylvania, Florida, and Ohio swung Trump's way, while Clinton racked up large margins of victory in states like California.

Still, observers have noted that it's fairly unclear whether Trump may have actually lost if the election were based on the popular vote, given that the campaigns would not have focused on the 10 to 12 key battleground states that they visited repeatedly throughout the general election.

Trump wasn't always so keen on the Electoral College.

In a series of tweets after former Republican presidential nominee Mitt Romney's loss in 2012, Trump lamented the Electoral College, calling it a "disaster for a democracy."

In an interview that aired Sunday on "60 Minutes," the president-elect said he would love to have a popular-vote election over the current Electoral College system.

"I'm not going to change my mind just because I won," Trump said. "But I would rather see it where you went with simple votes."