In a sign of good news for Clinton, she does lead early voting 51%-46%.
The seven-poll average in Texas now stands at Obama 47.1%--46.3% Clinton. Without ARG, Clinton still holds a narrow 47.0%--46.7% advantage. Considering the trend lines and early voting in the state, it is starting to appear less and less likely that Clinton will win any of the competitions in Texas. The primary, the caucus, and the delegates all seem to favor Obama at this point. She has to reverse Obama's momentum in the state immediately in order to prevent a sweep.
Will Ohio and Rhode Island be enough for Clinton to keep going? There actually is no precedent for a candidate with over 1,000 delegates dropping out before the convention, so I would not be so sure. As long as she leads in Pennsylvania polls and any delegate count, if I was on her campaign staff I would advise her to keep going. However, financial realities and a desire to maintain a strong, post-election position within the Democratic Party might dictate otherwise.