You shouldn't really say that directly to the base. It's a downer message. "You guys can support us and put your ideals on hold or you can not support us and watch Obama and his minions remake America." If you say that directly, the base might not go for it. They might go third party ("The lesser of two evils is still evil") or they might stay home ("Once America sees how bad liberalism is they will elect real conservatives instead of those losers we got in office now").
So Liebau says it indirectly, as a message to both the party and the tea-partiers. The message to elected Republicans and the RNCC is to support Conservatives in areas where conservatives can win (She singles out Charlie Crist as someone Republicans shouldn't be supporting). And then she addresses the Tea Partiers.
On the other hand, Tea Partiers need to be realistic, and understand the limitations of political passion and zeal. Plenty of congressional districts wouldn’t support even a second Ronald Reagan, simply because they are irremediably liberal. Rather than allowing the “best” to become the enemy of the “good enough,” activists could best further their cause by supporting the most conservative candidate who can win, rather than the most conservative candidate, period – when it means that candidate will surely lose.We'll see if the base listens to her, but I doubt it. Not yet. They still have plenty of conservative commentators telling them, again and again, that Americans largely agree with their point of view. All you need is the right conservative message and the Democrats/Liberals will be heading for the hills.
Those who oppose such a course are prone to claim that insufficiently conservative Republicans are the functional equivalent of Democrats. But they are wrong, for one fundamental reason. Compared to the status quo, every Republican – of whatever stripe – who heads to Washington next year will ultimately empower the most fiscally-responsible wing of the party.