Democratic presidential nominee Hillary Clinton’s lead over Donald Trump narrowed slightly among likely voters in the latest iteration of the Ipsos/Reuters tracking poll released Thursday.

Clinton led Trump by four points, 43-39. In last week’s installment of the Ipsos/Reuters poll, Clinton led Trump by five points, 40-35, among likely voters.

Though her lead decreased slightly, Clinton gained three percentage points of support, from polling at 40 percent last week to 43 percent in the latest poll.

With third-party candidates included, Clinton received 42 percent support among likely voters in this week’s survey, with Trump at 38 percent, Libertarian candidate Gary Johnson at 6 percent and Green Party candidate Jill Stein at 2 percent.

The tracking poll was conducted online by Ipsos for Reuters. The survey, conducted July 30-Aug. 3, includes 1,072 likely general election voters with a margin of error of 3.5 percentage points.