Biden's lead narrows in early voting states: poll

Joe BidenJoe BidenAre Democrats turning Trump-like? Volatile presidential polls spark new round of anxieties British Bookmaker: Warren has replaced Biden as Democratic primary favorite MORE's lead atop the Democratic primary field in early voting states has narrowed, according to a CBS poll released Sunday.

The former vice president enjoys a 5 point lead over his closest competitor, with 25 percent of likely Democratic voters in states holding their primaries before or on Super Tuesday saying they would vote for Biden if the primary or caucus were held today.

Sen. Elizabeth WarrenElizabeth Ann WarrenAre Democrats turning Trump-like? Manufacturing shrinks, raising questions for Trump Volatile presidential polls spark new round of anxieties MORE (D-Mass.) is the second choice of voters in the 18 states surveyed, coming in at 20 percent.

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Sens. Kamala HarrisKamala Devi HarrisAre Democrats turning Trump-like? Volatile presidential polls spark new round of anxieties Conservative commentator rips Shapiro over criticism of people with multiple jobs MORE (D-Calif.) and Bernie SandersBernie SandersVolatile presidential polls spark new round of anxieties GOP memo deflects some gun questions to 'violence from the left' British Bookmaker: Warren has replaced Biden as Democratic primary favorite MORE (I-Vt.) are in tight competition for third, at 16 percent and 15 percent support, respectively.

South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegVolatile presidential polls spark new round of anxieties British Bookmaker: Warren has replaced Biden as Democratic primary favorite The Hill's Campaign Report: Battle for Senate begins to take shape MORE (D), at 6 percent, former Rep. Beto O'RourkeBeto O'RourkeHillicon Valley: O'Rourke proposal targets tech's legal shield | Dem wants public review of FCC agreement with T-Mobile, Sprint | Voters zero in on cybersecurity | Instagram to let users flag misinformation O'Rourke proposes holding tech platforms accountable for hate speech The Hill's Campaign Report: Battle for Senate begins to take shape MORE (D-Texas), at 4 percent, and former Housing and Urban Development Secretary Julián Castro, at 2 percent, are the remaining candidates scoring above one percent support.

Warren and Harris, at 55 percent and 53 percent, lead the field in terms of who respondents are considering voting for.

CBS' surveyed 8,760 registered Democratic voters in early states between July 9 and 18. The margin of error for the sample is 1.5 points.

Sunday's CBS poll is a significant shift from a similar one released June 16.

In that survey, Biden lead in early states at 31 percent support, followed by Warren at 17 percent and Sanders at 16 percent. Harris was fourth at 10 percent support.

That survey also looked at 18 states, but included Georgia instead of Maine.

The shifts in support in those states generally line up with how the first Democratic presidential debate was perceived: Warren holding her own on night one, and Harris being applauded for taking on Biden on night two.