The received wisdom is that they cannot win.

大家一致认为他们不会赢。

《牛津词典》

We know they cannot win, but if they do win sometimes, it's even funnier.

我们知道他们不可能赢，但如果他们有时真的赢了，那就更有趣了。

youdao

You cannot win.

你没有胜算。

youdao

"In ancient Rome,the gladiators went into the arena with these words on their lips: let me win,but if I cannot win, let me be brave in the attempt.

VOA: special.2009.08.23

"You really cannot win a war against these incredibly powerful, brutal,enormously wealthy cartels either in the United States or in Mexico.

VOA: standard.2009.06.09

Mexican Ambassador Arturo Sarukhan ,". Congress says his government is engaged in a fierce battle with drug traffickers that export illegal narcotics to the United States, but that Mexico cannot win the battle alone.

VOA: standard.2009.04.12

All of this is not to say that Romney cannot win in the general election.

FORBES: The 2012 Election Remains A Tossup

Obviously a political party cannot win elections, outside of certain rarefied locales, on snob appeal alone.

WSJ: What's at Stake in Wisconsin

If he cannot win it this time it will really open up the Republican field.

BBC: Romney's uneasy heartland