Among the many questionable claims that have come from the White House over the past month-and-a-half, one of the most questionable came from an unexpected source: Chief of Staff Reince Priebus.

Speaking at the Conservative Political Action Conference last month, Priebus asserted that the policies President Donald Trump had outlined to that point met with the approval of 80 per cent of the American public. We considered that claim and determined it to be true - if you considered only Republicans to be Americans.

An expansive new poll from Quinnipiac University allows us to look at the question more closely. The pollsters gauged public opinion on a broad range of issues that have already emerged from the Trump White House - policy on Russia, transgender school bathroom use, deportations. On only one did more people agree with Trump's position than oppose it.

On nearly every issue, Trump gets majority support only from Republicans. In the case of lowering taxes on the wealthy, he doesn't even get that.

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In every case where the results are about split, both overall and within party responses, more people oppose Trump's view than support it.

Only infrastructure - spending more money to improve roads and airports, among other things - meets with overwhelming approval.

More than 90 per cent of the members of each party agree that such spending would be warranted.

This highlights the partisanship that locked Washington over the past eight years. Infrastructure spending is popular, and President Barack Obama consistently called for new spending, but no major infrastructure spending bill passed the Republican-controlled Congress.

The Quinnipiac data do make very clear that any claim to a mandate for Trump's policies is simply incorrect. The only group that consistently agrees with what Trump is doing is his base of Republican voters. So far, that's been more than enough for him to be successful.