Barack Obama's visit to Wisconsin comes in the midst of a heated campaign for the White House.
Ron Johnson's file
Recent statements involving Ron Johnson
Recent stories featuring Ron Johnson
A look at our most-clicked items from December, including an oldie but a goodie.
Claims over campaign financing and Obamacare have marked the early stages of the 2016 U.S. Senate campaign.
These fact checks covered Democrats as well as Republicans, on taxes as diverse as taxes and foreign kings.
Also: Our top Scott Walker factchecks from 2015
Some older items got new attention from PolitiFact readers in October.