"harvest of shame" chronicled the crime of america's migrant farm workers and byron pitts returns to the fields to continue the story. >> reporter: they are the migrants, workers in the sweatshops of the soil, the harvest of shame. >> reporter: in 1960, cbs news correspond edward r. murrow called them the forgotten people, the undereducated, the underfed. with raw and striking images, murrow's documentary exposed the poverty and deplorable working conditions endured by america's two to three million migrant farm workers. >> only in name they are not a slave. but in the way they are treated they are worse than a slave. >> reporter: men, women, and children who harvested crops for the best-fed nation on earth earned barely enough to feed themselves. >> reporter: what is an average dinner for the family? >> well, we just... you mean what do we have in? >> reporter: yes. >> well i cooked a pot of beans and fried some potatoes. >> reporter: from the tomato, bean, and sugar cane fields of florida, working steadily north to the apple orchards of new york, life was an endless road trip, in h

byron pitts takes a closer look. >> reporter: edison, new jersey. with caffeine in their veins, marching orders in hand, the tea party patriot foot soldiers spent the last few months here in search of converts. like all tea parties they're energized by goals of reduced federal spending, small government and free markets. in the last year, they have taken their message door to door in neighborhoods across the country. according to a cbs news exit poll 41% of voters support the tea party, which is actually not a party at all, rather a movement by people united by outrage over the rising federal debt and spending. >> thank you so much. >> reporter: a potent force is the tea party express, which promotes and funds conservative candidates boasting about 400,000 members nationwide. but the largest national tea party organization is the tea party patriots, with more than 2800 chapters across the country. >> yes, we will! >> reporter: several groups have sparked criticism using racist slurs and images in marchs around the country. organizers say each group

byron pitts, cbs news, new york. >> couric: updating our top story. top story, the battle for congress. republicans have two pickups in the senate, cbs news projects dan coat it is winner indiana taking the seat of retiring democrat evan bayh. and in arkansas, john boosman unseats democrat blanche lincoln but a big win for the democrats in west virginia, they keep robert byrd's seat, joe manchin defeats john raese. in connecticut, richard blumenthal defeats former wrestling mogul linda mcmahon. meanwhile, two tea party victories of note. marco rubio wins in the sunshine state and in kentucky ran paul. in the house, republicans have a net gain of eight seats in the early going. they need 39 in all by the end of the night in order to take control. stay with cbs news and this cbs station for election updates throughout the evening then join our cbs news election team for special hour-long wrapups with the latest returns and analysis at 10:00 p.m. eastern time and again at 1:00 a.m. eastern. our live coverage will be available at cbsnews.com and at youtub

byron pitts is at a tea party in the nation's capital. byron, they must be feeling pretty good there tonight. >> reporter: katie, you're right, the mood here is festive. this is one of a number of tea party events tonight. when it was announced earlier tonight that the republicans had regained control of the house this room erupted. people were chanting "u.s.a., u.s.a.," they were hugging, people were applauding. make no mistake, this has been a big night for the tea party. the republican party would not have had a successful season without the tea party support. according to a cbs exit poll 40% of the people who voted tonight said they are tea party supporters and 21 said said they are strong supporters of the tea party. john mechler joins us, president of the tea party patriots. you have been on the road for two weeks. what's this moment mean like to you? >> this is incredible. this is the starting point. we're just getting started. it feels great, everyone is celebrating but the real work starts tomorrow. >> reporter: i heard someone s

first, though, byron pitts with a preview of tonight's "cbs evening news." >> reporter: it was called "harvest of shame." a cbs news documentary about migrant workers in the u.s. it aired 50 years ago this week. tonight, an update on the "cbs evening news" with katie couric. "cbs evening news" with katie couric. juvÉderm® xc is the gel filler your doctor uses to instantly smooth out lines right here. temporary side effects include redness, pain, firmness, swelling, bumps, or risk of infection. ask your doctor about juvÉderm® xc. yeah. aww...that oj needs alka-seltzer plus. fast powder packs are a taste-free fizz-free way to transform your drink into a powerful cold fighter! there's a cold front moving in, but relief is on the way. into a powerful cold fighter! ) my new windows phone can go from my pocket to taking a picture in seconds. what up, dave! i just point, shoot, and post to facebook. so instead of fumbling to open my camera app like dave here, i can put my phone away, and open my parachute. open yours, dave! hey, is it cool if i date emily when you're... ...nevermind. vo:

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