In the Democratic Party’s South Carolina primary, about 120,000 people–18.4% of the total voters–turned out to vote for either Tom Steyer, Amy Klobuchar or Pete Buttigieg. All three of those candidates have dropped out since Saturday. Another 38,000, or 7.1 percent, voted for Elizabeth Warren who still remains in the race.

This isn’t really such a big number, as it amounts to about one in four voters who opted for someone other than Biden, Sanders or (mysteriously) Andrew Yang and Tulsi Gabbard. Yet, it matters a great deal how voters like this will break in future states now that their choices are essentially down to Biden, Sanders, and Bloomberg.

Whether Warren stays in or gets out, she’s going to lose support to the others as they appear more viable. Word is that Buttigieg and Klobuchar will officially endorse Biden, and some of Sanders’ supporters are calling on Warren to drop out and endorse Sanders to balance things out. I’m not sure she’d actually prefer Sanders to Biden, but based on the South Carolina exit polls, it’s unlikely that Sanders would benefit form Warren’s withdrawal from the race. She did best with white women, and white women did not support Sanders in South Carolina.

Among non-college educated white women, Sanders and Biden basically split the vote, meaning that this demographic looks like a wash. Among women with college degrees, however, Biden crushed Sanders 40 percent to 15 percent. I think it’s safe to assume that white women who voted for Warren in South Carolina would have broken for Biden over Sanders if she had not been an option. I also see no reason to think this is peculiar to South Carolina.

More than Sanders supporters want to admit, this election is really a pro- vs. anti-Sanders contest, and Sanders is fairly close to being maxed out. But I think he honestly should expect to pull more votes from Buttigieg than from Warren. The reason is basically that young voters who liked Buttigieg’s freshness and youth will probably opt for Sanders over Biden since that is where most of their peers have been from the beginning.

Ideology explains almost nothing in this campaign. Biden did worst in South Carolina with non-college educated voters and that’s where Bernie had his biggest strength. Sanders pulls from Trump’s base more than from liberal-minded progressives, and Biden wins the white professional vote more than the hardhat one. You’d never expect this if you listened to the pundits on your teevee, but it’s true.