In the final undecided Senate contest of 2022, Democratic Sen. Raphael Warnock of Georgia holds a narrow lead over Republican challenger Herschel Walker among those likely to vote in a runoff election Tuesday, according to a new CNN Poll conducted by SSRS.

The survey shows that Walker faces widespread questions about his honesty and suffers from a negative favorability rating, while nearly half of those who back him say their vote is more about opposition to Warnock than support for Walker. Voters’ modestly more positive views of Warnock and a firmly committed base of supporters appear to boost the incumbent in the new poll.

Overall, 52% of likely voters say they plan to support Warnock in Tuesday’s runoff and 48% pick Walker. Partisans on both sides are deeply entrenched, with nearly all Democrats (99%) behind Warnock and 95% of Republicans backing Walker. Independents break in Warnock’s favor, 61% to 36%, but make up a relatively small slice of likely voters, 17%, compared with 24% in a CNN exit poll of voters in the first round of this contest last month. (Warnock finished narrowly ahead of Walker in November but without the majority of the vote needed to avoid a runoff.)