Barack Obama Leads Texas Poll Released by Reuters / C Span/Houston Chronicle

Texas Poll: Hillary Clinton 44%, Barack Obama 47%.

Hillary Clinton Leads Texas Poll Released by WFAA / Belo Tracking Poll

Texas Poll: Hillary Clinton 46%, Barack Obama 46%.

Barack Obama Leads Ohio Poll Released by Reuters / C Span/Houston Chronicle

Ohio Poll: Hillary Clinton 45%, Barack Obama 47%.

Hillary Clinton Leads Ohio Poll Released by Suffolk University

Ohio Poll: Hillary Clinton 52%, Barack Obama 40%.

John McCain Leads Texas Poll Released by Reuters / C Span/Houston Chronicle

Texas Poll: Mike Huckabee 33%, John McCain 53%, Ron Paul 6%.

John McCain Leads Texas Poll Released by WFAA / Belo Tracking Poll

Texas Poll: Mike Huckabee 31%, John McCain 56%, Ron Paul 6%.

John McCain Leads Ohio Poll Released by Reuters / C Span/Houston Chronicle

Ohio Poll: Mike Huckabee 28%, John McCain 61%, Ron Paul 5%.

Hillary Clinton Leads Texas Poll Released by American Research Group

Texas Poll: Hillary Clinton 47%, Barack Obama 47%.

Barack Obama Leads Texas Poll Released by McClatchy/MSNBC/Ft. Worth Star Telegram Poll conducted by Mason Dixon Polling & Research

Texas Poll: Hillary Clinton 45%, Barack Obama 46%.

Barack Obama Leads Texas Poll Released by Reuters/C SPAN/Houston Chronicle/Zogby tracking poll

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

Hillary Clinton Leads Ohio Poll Released by American Research Group

Ohio Poll: Hillary Clinton 51%, Barack Obama 44%.

Hillary Clinton Leads Ohio Poll Released by Columbus Dispatch Poll Conducted by mail (Dispatch.com)

Ohio Poll: Hillary Clinton 56%, Barack Obama 40%.

Hillary Clinton Leads Ohio Poll Released by Plain Dealer poll conducted by Mason Dixon Polling & Research

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

Hillary Clinton Leads Ohio Poll Released by Reuters/C SPAN/Houston Chronicle/Zogby tracking poll

Ohio Poll: Hillary Clinton 47%, Barack Obama 46%.

John McCain Leads Texas Poll Released by American Research Group

Texas Poll: Mike Huckabee 26%, John McCain 61%, Ron Paul 9%.

John McCain Leads Texas Poll Released by Reuters/C SPAN/Houston Chronicle/Zogby tracking poll

Texas Poll: Mike Huckabee 36%, John McCain 54%, Ron Paul 4%.

John McCain Leads Ohio Poll Released by American Research Group

Ohio Poll: Mike Huckabee 26%, John McCain 59%, Ron Paul 12%.

John McCain Leads Ohio Poll Released by Columbus Dispatch Poll Conducted by mail

Ohio Poll: Mike Huckabee 24%, John McCain 64%, Ron Paul 4%.

John McCain Leads Ohio Poll Released by Reuters/C SPAN/Houston Chronicle/Zogby tracking poll

Ohio Poll: Mike Huckabee 27%, John McCain 61%, Ron Paul 3%.

Hillary Clinton Leads Texas Poll Released by Belo Texas Tracking Poll conducted by Public Strategies Inc

Texas Poll: Hillary Clinton 46%, Barack Obama 45%.