(NBCNEWS) — With the presidential primaries in full swing, Donald Trump maintains his sizable lead over the rest of the Republican field. Among Republican or Republican-leaning registered voters, Trump has 35% support compared to 18% for Ted Cruz and 13% for Marco Rubio, according to results from the latest NBC News|SurveyMonkey Weekly Election Tracking Poll for the week of December 28, 2015 through January 3, 2016. The poll was conducted online among a national sample of 3,700 adults aged 18 and over.

Trump leads among men with 39% of support, compared to 21% of men who support Cruz and 13% of men who support Rubio. Trump also leads among women with 29% support, while Cruz and Rubio have about equal support from women—13% and 14%, respectively.

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