President Obama’s appearance on “Late Show with David Letterman” on Tuesday gave the show its best overnight rating since February, 2010, CBS said.

“Late Show” averaged a 4.0/10, up 60% from the year-to-date Tuesday average and up 67% from its Monday through Friday average from the 2011-12 season. The last gih mark for the show came on Feb. 9, 2010, with guests Jennifer Garner, Brooklyn Decker and Sade.

According to ABC, “Live with Kelly & Michael,” which featured an interview with the Romneys, grew its day-to-day numbers by 3% in households, with a 3.1/11 rating, as well as among women 25-54, with 1.8/12. Compared to ratings from a year ago, it grew by 7% in homes and 13% in women 25-54.

The ratings are for overnight markets.

In the campaign fundraising video posted by Mother Jones magazine, Mitt Romney is heard talking of the “high risk” of going on “The View,” noting that only one of the hosts is a conservative. But today, Elizabeth Hasselbeck announced that Romney would be guesting on the show some time in October.