At that stage, of course, American politicians were not generally keeping a worried eye on Evangelical political opinion. When in the 1980s they did, they discovered a large constituency emphatically in favour of Israel, for reasons related to the apocalypse. It was the same longing to bring on the Last Days which back in the 1840s had enthused the newly founded Evangelical Alliance and the promoters of the Jerusalem Bishopric (see pp. 836–7), and which derived its particular premillennialist roots from the Millerites and the dispensationalism of John Nelson Darby.