Campaign Slogans: To Recycle Or Not To Recycle?

Ben Smith reported last night that Mitt Romney's new slogan, "Believe in America," was previously used by John Kerry for a cross-country bus tour. However, many presidential campaign slogans have been strikingly similar, albeit not exactly the same, as previous campaigns:

• George W. Bush's 2004 campaign message, as introduced at his RNC Nomination speech was "TURN THE CORNER," which was near identical to FDR's 1932 slogan, "WE ARE TURNING THE CORNER"
• Both Nixon and Reagan stressed the urgency of their message, Nixon with "NIXON NOW" and Reagan with "THE TIME IS NOW"
• John McCain's 2008 slogan "COUNTRY FIRST," was almost the same as Warren Harding's "AMERICA FIRST" in 1920.
• Eisenhower's "WE LIKE IKE" sounded like a rip-off of Wendell Willkie's 1940 message "WE WANT WILKIE," except one was a rhyme and the other used alliteration.