Pollsters that meet at least two of the three criteria below are considered “select pollsters” by The Times, as long as they are conducting polls for nonpartisan sponsors. Has a track record of accuracy in recent electionsIs a member of a professional polling organizationConducts probability-based sampling

The most recent Reuters/Ipsos poll, shows that despite a steady 44% approval rating since taking office, other areas of his job performance have changed. Americans’ view on his handling of the economy, for example, have gone from 43% in late January to 39% this week.