A quick rundown of the Pros for each Race:
Human: +1 Feat, +1 Skill Point/Level, +1 to 2 Stats, Human Versatility (Mod 5)
Dwarf: Axe/Armor/Tactics/Toughness Enhancements, Racial Saves, Con Bonuses
Warforged: Con Bonuses, Racial Immunities, Follow of Lord of Blades
Elf: Longsword Enhancements, Follower of Soverign Host
Drow: Shortsword Enhancements, Follower of Vulkoorim, Starting 10 CHA, Drow SR
Halfling: +1 To-Hit, +Dex Bonuses, +1 AC Size Bonus
And a quick rundown of the Cons for each Race:
Human: +1 to 2 Stats instead of +2 to 1 stat
Dwarf: Lower CHA
Warforged: Body Feat is costly, lower CHA & WIS
Elf: Lower CON
Drow: Lower CON
Halfling: Lower STR usually means Dex-based or TWF, Intimidate Penalty
But overall, all the races are quite good for Paladins.
For a quick “generalization” of the Racial differences for Paladins (and these are generalizations for the Races, not hard-rules)
--------------------
The Human Paladin
--------------------
Often uses Bonus Feat for Exotic Weapon: Kopesh, else goes with Longswords
Usually Sword-and-Board
Human Adaptability allows better balance of starting stats vs. Tomes/Items/Class Enhancements
Usually has the highest CHA of all Paladins
--------------------
The Dwarven Paladin
--------------------
Usually sticks to Dwarven Axes, but will use other axes, and occasionally 2-handeds
Often has a higher Dex, due to Racial Armor Mastery
Usually has the most hitpoints of all Paladins
--------------------
The Warforged Paladin
--------------------
Usually goes with Greatswords for the Lord of Blades Enhancements
Lowest CHA and WIS of most Paladins, but Immunities make up for it
--------------------
The Elven Paladin
--------------------
Elven Paladins are almost exclusively Longsword users, as the Racial Bonus and Soverign Host make them deal a lot of damage.
Usually tied with Drow for the lowest Hitpoints of all Paladins, but higher Dex, and occasionally 2-Weapon Fighters
--------------------
The Drow Paladin
--------------------
Elven Paladins are almost usually Shortsword users, as the Racial Bonus and Soverign Host make them deal a lot of damage.
Usually tied with Elves for the lowest Hitpoints of all Paladins, but higher Dex, and occasionally 2-Weapon Fighters
Drows also have start with 10 in CHA, INT, and DEX... making a higher Charisma cost less.
Drow SR can help augment a Paladin's Saves for survivability
--------------------
The Halfling Paladin
--------------------
Halfing Paladins tend to be Finesse Fighters, and very often 2-Weapon due to Racial Dex, and low starting STR
Usually have some of the best saves of all Paladins