New poll numbers from ABC and The Washington Post show that Hillary holds only a single-digit lead over Obama among Dem likely voters in Ohio, while it's a dead heat in Texas:

Ohio: Hillary 50%, Obama 43%

Texas: 48%-47%

The tight numbers suggest that Obama's string of victories has given him momentum heading into these potentially decisive contests. Given Obama's growing lead in delegates, these numbers are far too tight for comfort for Hillary, who needs sizable victories in these states to turn the narrative of the race around.

The poll finds that Hillary leads in both states among her base constituencies -- white women, Latinos and seniors. She holds a sizable edge over white men in Ohio -- perhaps fueled by her support among working class voters.

Meanwhile, Obama holds a clear advantage among white men in Texas and in both states retains a sizable advantage among young and higher-income voters and a huge advantage among blacks.

Tellingly, Obama is apparently winning the argument over who's most electable in November: In both states he holds a greater than 10-point edge in that category.

Full poll here.