Poll: Contentious primary hurting GOP's image

In the poll, 42 percent of registered voters said the primary race has made them feel less favorable about the GOP, compared to just 19 percent who said they feel more favorable. Thirty-eight percent said the brawl for the Republican nomination hasn’t changed their view of the party as a whole.

Republican primary voters are split on whether the contentious race, which has been largely dominated by the often bombastic rhetoric of front-runner Donald Trump, has improved or eroded their perceptions of their own party.

A third — 33 percent — say they view the party more favorably now, while 23 percent say they now have a worse image of the GOP.

Data from the same poll released last week showed Trump with a 13 point lead over rival Texas senator Ted Cruz, with Florida senator Marco Rubio and former neurosurgeon Ben Carson running behind.