Iowa continues to be a big political crossroads. Vice President Dick Cheney speaks at a rally later today in Waterloo. President Bush will visit Cedar Rapids next Tuesday. And democratic presidential candidate John Kerry will stop in Sioux City as he makes a six-day campaign journey from his birthplace in Colorado to the Democratic National Convention in Boston. Kerry and his runningmate, John Edwards, will be in Sioux City on Saturday, July 24th.Kerry will end his bus tour in Boston to formally accept his party’s presidential nomination.