The now-graduated Georgetown Law student was not allowed to testify at a House Oversight And Government Reform Committee hearing on contraception held back in February. House Democrats walked out of the hearing in protest.
Radio commentator Rush Limbaugh later called her a "slut" and a "prostitute." Obama called her with words of encouragement after Limbaugh's tirade, for which the conservative shock jock later apologized.
Fluke has endorsed Obama.
Obama is visiting Denver, along with Grand Junction, Pueblo and Colorado Springs. Colorado is considered a crucial swing state in 2012, which Obama won in 2008 but George W. Bush carried in 2004 and 2000. Obama leads Romney 46.4 percent to 43 percent, according to Pollster.