Khatami headed for landslide as conservatives charge vote fraud . Iran says opposition disrupting overseas voting . US Iranians to vote in elections in homeland . US sees heavy turnout at Iran polls as evidence of desire for freedom . Hotels cancel voting for US Iran expates .
Conservative watchdog complains of fraud in election .
Divided US policymakers await outcome of Iranian election . Election Day by Camera - Updated . Iran extends presidential polling for two hours . Khatami seems on the way to win, but now comes the hard part . Khatami casts vote, challenges conservatives .