Conservative reporter calls Wisconsin poll showing Trump trailing Biden, Sanders a 'warning sign'

Conservative reporter Henry Rodgers called a recent poll showing President TrumpDonald John TrumpRepublicans consider skipping witnesses in Trump impeachment trial Bombshell Afghanistan report bolsters calls for end to 'forever wars' Lawmakers dismiss Chinese retaliatory threat to US tech MORE trailing former Vice President Joe BidenJoe BidenRepublicans consider skipping witnesses in Trump impeachment trial Trump trade deal likely to sow division in Democratic presidential field Trump supporters at Pa. rally 'upset' after Democrats introduce impeachment articles MORE and Sen. Bernie SandersBernie SandersTrump trade deal likely to sow division in Democratic presidential field Buttigieg says he doubts consulting work for insurer led to layoffs Trump supporters at Pa. rally 'upset' after Democrats introduce impeachment articles MORE (I-Vt.) “very concerning.”

“This is a warning sign for Trump, he needs to step it up,” Rodgers, who is a reporter the conservative outlet The Daily Caller, told Hill.TV during an appearance on "Rising."

“Maybe he needs to take another trip down to Wisconsin, do a little rally” he added.

Rodger's comments come after a Marquette University Law poll released on Wednesday found Biden leading Trump by 9 points.

Fifty-one percent of Wisconsin voters said they supported Biden, while 42 percent of those polled voiced support for Trump.

The same survey found Sanders ahead of Trump by four points at 48 percent compared to Trump’s 44 percent support.

Meanwhile, Trump tied with Sen. Elizabeth WarrenElizabeth Ann WarrenTrump trade deal likely to sow division in Democratic presidential field Buttigieg says he doubts consulting work for insurer led to layoffs Trump supporters at Pa. rally 'upset' after Democrats introduce impeachment articles MORE (D-Mass.), each receiving 45 percent support. 

Wisconsin is considered a must-win state for Democrats in the 2020 elections.

President Trump unexpectedly won the state’s 10 electoral votes in the 2016 election by a narrow margin over Hillary ClintonHillary Diane Rodham ClintonTrump trade deal likely to sow division in Democratic presidential field Trump supporters at Pa. rally 'upset' after Democrats introduce impeachment articles Hillary Clinton documentary to premiere at Sundance MORE.

—Tess Bonn