John McCain is tied with Barack Obama at 45 percent each in an AP-Ipsos poll conducted April 7-9, after having led him by 10 points in late February. Hillary Clinton, who had a 5 point lead over McCain in the previous survey, now is ahead 48 percent to 45 percent, within the poll’s 3.1 percent margin of error. Groups in which Obama lost significant support since February included voters under 35, independents and high-income households.

In the Democratic race, Obama leads Clinton 46 percent to 43 percent, unchanged from this survey’s February results. The margin of error is 4.4 percent. As other polls have been showing to various degrees, a good chunk of each Democrat’s supporters say they will vote for McCain if their choice loses. About a quarter of Obama backers and a third of Clinton supporters are in that camp.