Hillary Clinton's lead over Donald Trump in the U.S. presidential race has narrowed since late last week, according to the results of the first Reuters/Ipsos poll conducted since the Orlando shooting rampage on Sunday.

Trump, the presumptive Republican nominee for the Nov. 8 election, has blamed Democratic policies for the worst mass shooting in U.S. history and doubled-down on his pledge to ban Muslim immigration, while Clinton has warned against demonizing Muslim-Americans.

The poll, conducted from Friday to Tuesday, showed Clinton with an 11.6-point lead — 44.6 percent to 33.0 percent — over Trump, down from the 13-point lead she had in the five days that ended Saturday.