It’s International Women’s Day, so what better day to ask the question: Was there a gender gap on Super Tuesday?

The answer: Yes and no.

When it comes to how women and men split their votes in Tuesday’s Ohio, Tennessee and Georgia primaries, there’s not that big a difference, as The Post’s polling director, Jon Cohen explains. The votes of men and women in those states tended to differ by a maximum of only about 5 percentage points.

But when you dig a little bit deeper, the exit polls show some warning signs for former Pennsylvania senator Rick Santorum.

In Ohio, former Massachusetts governor Mitt Romney won unmarried women over Santorum by a huge 17-point margin. Among working women, Romney beat Santorum by 8 points.

That’s all the more striking when you consider that Romney beat Santorum among women overall in the state by only 3 points.

The silver lining for Santorum: He’s beating Romney by 4 points among married women, who comprised 33 percent of the Ohio GOP electorate.

Unmarried women, by contrast, represented only a small slice of the pie – 12 percent in Ohio. But they’re likely to be a greater presence at the polls in the general election – and that could be bad news for Santorum.

View Photo Gallery: Women and the 2012 campaign: A look back at who said what in an election season that has focused heavily on women’s issues.

Here’s a closer look at today on the trail (Courtesy of candidate schedules and the PBS NewsHour Political Calendar; all times Eastern):

10 a.m.: Newt Gingrich holds a rally in Jackson, Miss.

11 a.m.: Rick Santorum holds a rally in Huntsville, Ala.

3 p.m.: Rick Santorum holds a rally in Pelham, Ala.

4:30 p.m.: Newt Gingrich holds a rally in Tupelo, Miss.

6 p.m.: Mitt Romney holds a campaign event in Pascagoula, Miss.

7 p.m.: Rick Santorum addresses the Alabama Policy Institute in Mobile, Ala.

8 p.m.: Newt Gingrich holds a rally in Southaven, Miss.