The phrase "a growing bloc of" is correct and usable in written English.
It can be used to describe an increasing group of individuals or entities that share a common interest or goal, often in a political or social context.
Example: "A growing bloc of voters is advocating for environmental reforms in the upcoming election."
Alternatives: "an expanding group of" or "a rising coalition of".
The country's 11 million unauthorized immigrants – and a growing bloc of Latino voters also courted by Jeb Bush – await her answer.
Germany has been the paymaster in the eurozone crisis, to the chagrin of many German voters and a growing bloc of conservative lawmakers in Merkel's coalition.
now joins a growing bloc of historic, mainline Protestant churches that have voted to accept gay clergy members and church leaders — a bloc that includes the United Church of Christ, the Evangelical Lutheran Church in America and the Episcopal Church.
Should the FPÖ manage to return to government, it would ring alarm bells across the continent, with Austria joining a growing bloc of countries led by authoritarian and Eurosceptic governments, which includes Hungary and Poland.
WASHINGTON — The Congressional vote on whether to strike Syria will offer the best insight yet on which wing of the Republican Party — the traditional hawks, or a growing bloc of noninterventionists — has the advantage in the fierce internal debates over foreign policy that have been taking place all year.
Some Republican leaders believe it is in the party's best interest to pass immigration reform in order to allow the GOP to make its case to a growing bloc of Hispanic voters, who tend to back a path to citizenship and overwhelmingly supported President Obama last fall.
On one issue, though, there is a sizeable (and growing) bloc of voters who are not only cross-partisan but also so committed they could be called "single-issue voters".
The amorous turn, a more profound difference in Republican strategy than in Democratic, evolves directly from demographic shifts: Hispanics are now the fastest growing bloc of ethnic voters.
Others believe the House GOP's lack of movement on immigration will severely hurt them among the growing bloc of Latino voters.
All three Democratic presidential candidates have adopted immigration platforms that are more liberal than President Barack Obama's, in their quest to appeal to the growing bloc of Hispanic voters, for whom support of immigration reform is often a key test of legitimacy.
Bush shared the values of this growing bloc and enjoyed its overwhelming support.
