This article is a collection of statewide public opinion polls that have been conducted relating to the April, May, and June Democratic presidential primaries, 2008.

Pennsylvania

Pennsylvania winner: Hillary Clinton

Format: Primary see: Pennsylvania Democratic primary, 2008

Date: April 22, 2008

Delegates at stake 188

Delegates won To be determined

Tracking Polls

Polls

Indiana

Indiana winner: Hillary Clinton

Format: Primary see: Indiana Democratic primary, 2008

Date: 6 May 2008

Delegates at stake 72

Delegates won To be determined

The sample set for some polls in this table is not unique and overlaps with polls from previous days. These polls are marked as Tracking Polls.

Statewide opinion polling for the April, May, and June 2008 Democratic Party presidential primaries

Indiana Tracking polls

North Carolina

: Barack Obama

Format: Primary see: North Carolina Democratic primary, 2008

Date: 6 May 2008

Delegates at stake 115

Delegates won To be determined

The sample set for some polls in this table is not unique and overlaps with polls from previous days. These polls are marked as Tracking Polls.

Statewide opinion polling for the April, May, and June 2008 Democratic Party presidential primaries

North Carolina Tracking polls

West Virginia

West Virginia winner: Hillary Clinton

Format: Primary see: West Virginia Democratic primary, 2008

Date: May 13, 2008

Delegates at stake 28

Delegates won To be determined

Kentucky

Kentucky winner: Hillary Clinton

Format: Primary see: Kentucky Democratic primary, 2008

Date: 20 May 2008

Delegates at stake 51

Delegates won To be determined

Oregon

Oregon winner: Barack Obama

Format: Mail-only Primary see: Oregon Democratic primary, 2008

Dates: May 2–20, 2008

Delegates at stake 52

Delegates won To be determined

Puerto Rico

Puerto Rico winner: Hillary Clinton

Format: Primary see: Puerto Rico Democratic primary, 2008

Date: June 1, 2008

Delegates at stake 55

Delegates won To be determined

South Dakota

South Dakota winner: Hillary Clinton

Format: Primary see: South Dakota Democratic primary, 2008

Date: June 3, 2008

Delegates at stake 15

Delegates won To be determined

Montana

Montana winner: Barack Obama

Format: Primary see: Montana Democratic primary, 2008

Date: June 3, 2008

Delegates at stake 16

Delegates won To be determined

2008 United States Democratic presidential primaries

Democratic

Statewide opinion polling for the April, May, and June 2008 Democratic Party presidential primaries