Republicans were so concerned about the party's dismal courtship of Latino voters in the 2012 election — Mitt Romney won just 27 percent of the Latino vote — that they publicly acknowledged a need to do better in the future, or face irrelevance.

Yet a new Pew Research study suggests the shifting electoral landscape may not be as perilous as previously thought. Though Latinos continued to increase their overall share of the electorate in 2012, they still lagged significantly behind other demographics in their rate of voter participation.

While a record 11.2 million Latinos voted in the 2012 presidential election, 12.1 million eligible Latino voters didn't bother to cast ballots, also a record-high.

While the number of eligible Latino voters grew 19 percent since 2008, from 19.5 million to 23.3 million, voter participation rose at a slower rate of 15 percent. In the end, less than half of all eligible Latino voters cast ballots — far less than the 66.6 percent and 64.1 percent turnout rates for black and white voters, respectively.

In fact, Latino voter participation actually decreased from the last presidential election.

To look at it another way, while Latinos made up 17.2 percent of the nation's population in 2012, they comprised just 8.4 percent of all voters.

"The Hispanic vote is like a raw prospect in the NBA Draft," The Washington Post's Chris Cillizza remarked. "The potential is quite clearly there but the record of accomplishment doesn’t come close to matching that potential."

As National Journal's Reid Wilson pointed out, an uptick in the Latino voting rate could have profoundly changed the 2012 election results. Given President Obama's huge edge with that demographic, a surge of Latino voters would have made battleground states into cakewalks, and possibly added more states to the president's win column.

If the percentage of Hispanics who cast ballots had grown to match the percentage of whites who voted, the presidential map would have changed dramatically. Those higher rates would have meant more than 1 million additional votes in California and Texas; Arizona, which voted for Romney by a 208,000-vote margin, would have added an additional 217,000 Hispanic voters. And in key battleground states such as Colorado and Nevada, close races could have turned into runaway wins for Obama. A greater emphasis on Hispanic turnout in Wisconsin, where just 44 percent of Hispanics voted and where Obama won by seven points, would have given the president a much more comfortable victory there. [National Journal]

Back in November, Pew's Mark Lopez pointed to one possible reason for the declining Latino voter rate, noting that nearly half of all Latino voters live in two states: California and Texas. Neither state, he explained, was at all competitive this year, especially given the lack of a Democratic primary to boost engagement.

However, a separate Pew report noted that Latinos are the nation's youngest ethnic group, and could therefore become far more of an active bloc down the road.

"Their median age is 27 years — and just 18 years among native-born Hispanics — compared with 42 years for that of white non-Hispanics," Lopez and his colleagues wrote. "In the coming decades, their share of the age-eligible electorate will rise markedly through generational replacement alone."

Even if the Latino voter participation rate continues to lag, the Latino share of the overall electorate will likely keep rising. In that respect, Republicans may want to take another shot at their big rebranding effort, which has already hit some major hiccups.