Hollywood heartthrob Leonardo DiCaprio will come to Madison Wednesday to lend his star qualities to the effort to kick George W. Bush out of office. DiCaprio will stump for Democratic candidate U.S. Sen. John Kerry at the Orpheum Theatre at 1:30 p.m. downtown, heating up a politically charged week that will culminate Saturday night with an appearance by “Fahrenheit 9/11” director Michael Moore at the Memorial Union Terrace on the UW campus.