Many Democratic voters are worried that a woman candidate cannot win the presidency in 2020. “I don’t think they’re strong enough to carry it for themselves,” an Iowa voter told the Washington Post. Amber Phillips reports that “female politicians are held by voters to a much higher standard than men,” and points to polls showing that today’s support for Elizabeth Warren (12 percent) and Kamala Harris (8 percent) drops to low single digits when voters are asked who is likely to defeat Trump.

Without denying that some people may harbor misogynistic feelings, and that many Democrats may indeed fear, as Phillips reported, that while they personally would happily vote for a woman for president, their neighbors might not, this doesn’t prove that women are held to a higher standard. The evidence is mixed. It’s never possible to know with certainty what motivates voters. Could Romney’s religion have decided the 2012 race? It’s possible.