Biggest blow to Clinton came from Midwest Obama voters who backed Trump, says progressive strategist

The biggest blow to Hillary ClintonHillary Diane Rodham ClintonTrump touts economic agenda in battleground Ohio The Memo: Campaigns gird for rush of early voting Trump's pitch to Maine lobstermen falls flat MORE's 2016 campaign came from voters in the Midwest who previously backed former President Obama but switched over to President TrumpDonald John TrumpBiden says his faith is 'bedrock foundation of my life' after Trump claim Coronavirus talks on life support as parties dig in, pass blame Ohio governor tests negative in second coronavirus test MORE, progressive strategist Ruy Teixeira said on Wednesday.

"Did she lose because people switched from Obama to Trump? Or did she lose because of a lack of enthusiasm for her candidacy, which resulted in people either not showing up or voting for a third party," Teixeira, author of the "Optimistic Leftist," told Hill.TV's Jamal Simmons on "What America's Thinking."

"This is a debate that has roiled the Democratic Party ever since Hillary Clinton lost the election," he said.

"My sense of the data, looking at a place like Iowa and these other states in the Midwest, is it was primarily a problem of switchers," Teixeira said, adding that "both were important."

Roughly 8.4 million voters who supported Obama in 2012 backed Trump four years later, according to the political website Sabato's Crystal Ball.

Trump in 2016 won historically Democratic stronghold states like Michigan, Wisconsin and Pennsylvania after making multiple trips to the states in an effort to appeal to working-class voters.

— Julia Manchester