(CNN) If the 2020 election were held today, President Donald Trump would lose, convincingly, to three of the most-mentioned potential 2020 Democrats, according to a new CNN/SSRS poll.
While 2020 polling in 2018 is of relatively limited value, a deeper dive into potential Trump head-to-head matchups with Sen. Bernie Sanders of Vermont, former Vice President Joe Biden and talk show host Oprah Winfrey reveals a major problem for Trump as he seeks to build a winning coalition in 2020: Women -- across virtually every age, education and racial range -- have moved against him in major numbers.
Biden holds an eye-popping 36-point edge over Trump among women, while Sanders leads Trump by 30 and Oprah bests him by 29. That's a very different result than in the 2016 election, when Hillary Clinton beat Trump by 13 points among women, according to exit polling. Orders of magnitude different.
There are a handful of other numbers in the poll -- detailing Trump's performance with various female subgroups -- that are even more eye-popping.
What these numbers suggest is that Trump's problem with female voters during the 2016 campaign has gotten considerably worse since he has been in office.
And that is a huge issue that Trump must find a way to resolve -- or, at least, mitigate -- if he wants to have any chance of winning a second term in 2020.
Women made up 53% of the electorate in 2016 and have cast a majority of the votes in every presidential election since 1984. The largest margin among women in a modern presidential election was Bill Clinton's 16-point win in his swamping of Bob Dole in 1996. Barack Obama won women by 13 points in 2008 and 11 points in 2012 -- roughly equivalent to the 13-point margin for Clinton in 2016.
The point here is simple: If Trump loses women by double digits, it's very hard to make the math add up for him.