Clinton works to make stands against Obama in Texas, Ohio

(CNN) -- Sen. Hillary Clinton Wednesday worked to shore up her support in the face of the momentum Sen. Barack Obama has built up after winning eight Democratic presidential contests in a row, while Sen. John McCain continued in his efforts to unify Republicans.

Clinton was scheduled to campaign in Texas, which she hopes will serve as a bulwark against Obama's growing wave of political support.

Texas holds its primaries on March 4, along with Ohio, Vermont and Rhode Island. The New York Democrat has events scheduled in McAllen, Robstown and San Antonio, Texas.

In addition to Texas with its large Latino population -- a group she has done well with this primary season -- Clinton is also banking on winning Ohio and its blue-collars voters, another group that has backed her in previous primaries and caucuses. Clinton was scheduled to campaign in Ohio on Thursday.