Republican pollster: GOP voters want their candidates to support Trump's policies and not criticize his behavior

Republican politicians looking to get ahead electorally have a new task in 2018: Not only must they align themselves with the policies of President Donald TrumpDonald John TrumpTrump nominates Jeffrey Rosen to replace Rosenstein at DOJ McCabe says ‘it’s possible’ Trump is a Russian asset McCabe: Trump ‘undermining the role of law enforcement’ MORE, they must also refrain from criticizing his personal behavior.

That's the overall message so far for Republicans, veteran GOP pollster Ed Goeas argued in a recent panel discussion on Hill.TV's show "What America's Thinking."

South Carolina Rep. Mark SanfordMarshall (Mark) Clement SanfordEndorsing Trump isn’t the easiest decision for some Republicans Mark Sanford warns US could see ‘Hitler-like character’ in the future House passes year-end tax package MORE was the latest Republican officeholder to learn this lesson after he lost a party primary election last week.

"If you look to his voting record, he's supporting the Trump policies but he did not communicate that well," Goeas told host Joe Concha.

"What America's Thinking" airs weekdays at 1pm ET on Hill.TV.