Wisconsin Poll: Mike Huckabee 32%, John McCain 48%, Ron Paul 7%.

Wisconsin Poll: Hillary Clinton 42%, Barack Obama 47%.

Texas Poll: Mike Huckabee 41%, John McCain 44%, Ron Paul 6%.

Texas Poll: Mike Huckabee 37%, John McCain 45%, Ron Paul 7%.

Texas Poll: Mike Huckabee 36%, John McCain 42%, Ron Paul 11%.

Texas Poll: Hillary Clinton 49%, Barack Obama 41%.

Texas Poll: Hillary Clinton 54%, Barack Obama 38%.

Texas Poll: Hillary Clinton 42%, Barack Obama 48%.

Gallup National Polls Poll: Mike Huckabee 29%, John McCain 51%, Ron Paul 5%.

American Research Group National Polls Poll: Mike Huckabee 31%, John McCain 54%, Ron Paul 3%.

Wisconsin Poll: Hillary Clinton 43%, Barack Obama 47%.

Pennsylvania Poll: Hillary Clinton 52%, Barack Obama 36%.

Ohio Poll: Hillary Clinton 55%, Barack Obama 34%.

Ohio Poll: Hillary Clinton 51%, Barack Obama 37%.

Gallup National Polls Poll: Hillary Clinton 45%, Barack Obama 46%.

American Research Group National Polls Poll: Hillary Clinton 45%, Barack Obama 47%.

Wisconsin Poll: Mike Huckabee 27%, John McCain 45%, Ron Paul 7%.

Wisconsin Poll: Hillary Clinton 41%, Barack Obama 45%.

Wisconsin Poll: Mike Huckabee 32%, John McCain 53%, Ron Paul 7%.

Ohio Poll: Mike Huckabee 36%, John McCain 50%, Ron Paul 6%.