The Republican presidential candidates are in Wisconsin, ahead of Tuesday's primary.
Rick Santorum crossed the state Wednesday, hitting three cities.
Mitt Romney's wife, Ann, visited last week, and on Wednesday, Newt Gingrich's wife, Callista, appeared in Madison to headline Cocktails with Callista at the Madison Club.
On Tuesday, Gingrich downsized his staff. His wife said during the Madison Club event that her husband redesigned his campaign. She said she wants to make sure he makes it to the summer convention.
"It's all about the math, and we'll keep moving forward this summer. If there is a winner before the convention, there's a winner," Callista Gingrich said. "But until then, we will keep working and keep striving to get to Tampa."
Callista Gingrich is from Wisconsin. She said she enjoys the opportunity to see her friends and family. The couple will appear at a rally at Marquette University on Thursday.