In a possible 2016 White House matchup, 41% of Iowa voters say they would back Clinton, the former secretary of state, 2008 presidential candidate, U.S. senator, and first lady, if she were the Democratic nominee, with an equal amount saying they would back New Jersey Gov. Christie if he were the GOP nominee. In a hypothetical general election showdown with Wisconsin Gov. Scott Walker, Clinton has a 46%-39% edge.

Christie’s on top 49%-32% when matched up against Vice President Joe Biden, with Walker edging Biden 42%-39%, in possible showdowns.

According to the poll, Clinton has a 52%-41% favorable/unfavorable rating with Iowa voters. Christie stands at 42%-16%, with the vice president at 38%-47% and nearly two-thirds saying they don’t know enough about the Wisconsin governor to form an opinion.