Opinions polls in the US have suggested that the opposition Republicans could regain control of the lower house of the US Congress.<br /><br />But with just two weeks to go before the US midterm elections, the contest in some areas is expected to be close.<br /><br />Top Republicans such as Sarah Palin, a former vice-presidential candidate, is hot on the campaign trail and asking supporters to "dig deep".<br /><br />Al Jazeera's Nick Spicer reports from Florida. (Oct 24, 2010)
