Ted Cruz has put together a strong organization for the Iowa caucuses. This report by Martin and Flegenheimer of the NYT describes the approach taken by the Cruz campaign- with a organizational head for each of Iowa's 99 counties, captains in 1537 of 1681 precincts, and 10,000 volunteers. Cruz campaign has carefully selected voters who vote consistently and who are likely to respond to one of a list of appeals based on research in behavioural psychology, points which precinct captains and volunteers use to make notes for talking to voters. Turnout is expected to be 121,000 to 140,000, and the Cruz campaign says it is prepared if the count is much higher with new caucus participants. Voter turnout is an important aspect of their campaign, saying their organizational effort with about 15,000 calls made each day from Iowa Cruz offices, is striving to improve performance by 2.5 to 5 percentage points and deal with a "swell" in voters by identifying additional voters. The Trump campaign is based more on campaigning generally to voter sentiment, drawing large numbers to rallies appealing to the white working class, voters who are less committed and less likely to vote- counting on a swell in new voters some who sign up as Republicans at the voting location....