People like to excuse the excesses of their party by saying that at least their party is better on certain issues than is the other party. Even when that would be a valid excuse if true, it isn't always true.
For example, Republicans like to say that their party is better at holding down the growth of government. Alas, the factual basis for that assertion seems to have escaped Veronique de Rugy, who has actually analyzed the growth of the federal government and come to a somewhat different conclusion. For example, federal spending increased more under George W. Bush than even under Lyndon B. Johnson.
Similarly, Democrats like to say that their party is better at protecting civil liberties, including Fourth Amendment rights. By some accounts, however, Obama is outdoing Bush on such issues.